Commander Glossary
Two-Headed Giant (2HG) is a team variant where two players share one life total and win or lose together, most commonly adapted to Commander at 30 starting life per side. It changes life and turn order but not everything else: Commander damage is still tracked per individual player, not per team, and there's no official Wizards ruling for 2HG specifically in Commander, so groups vary on the exact life total.
Two-Headed Giant pairs two players into one team that shares a single life total. Win or lose, they do it together, and the format is real: Wizards has published dedicated 2HG products over the years, and it's a standard team format at events like MagicFest. It's not a house rule someone invented at a kitchen table.
What makes it distinct from a normal multiplayer pod is the shared pool. In a four-player free-for-all, four life totals mean four separate games converging on one table. In 2HG, two of those four seats are collapsed into one number, so an attack on either teammate is really an attack on the team. Teammates traditionally sit next to each other at the table, both so they can coordinate combat and blocks in the moment and because seat position turns out to matter for turn order, which is the part covered below.
Commander has no official Two-Headed Giant rules of its own. Everything here is the standard 2HG variant, adapted to a Commander table by two players agreeing to bring Commander decks instead of the sixty-card decks the format was originally built around. That adaptation is common and works fine, but it also means a couple of things (starting life, chiefly) are left for your pod to decide rather than settled by a rulebook.
This is the one genuinely unsettled question. Standard 2HG's printed rule is 30 life per team; Commander's normal life total is 40 per player. Adapting one format to the other means picking one, and there's no official ruling that tells you which.
30 is the most defensible default, because it's the actual printed rule for the Two-Headed Giant variant rather than a number borrowed from a different format. It also keeps games from dragging: a team fielding two full Commander boards behind 40 shared life effectively has half the life pool of an ordinary four-player pod for double the board presence on defense, which tends to stretch games out well past what a normal Commander night runs.
Whichever number you pick, agree on it before shuffling up rather than mid-game. This is exactly the kind of thing the Rule 0 conversation → exists to settle, and it takes one sentence: "we're doing 2HG tonight, are we using 30 or 40 life per team?"
This is the rule newcomers get most wrong. Turns don't simply alternate player-by-player around the table. Teammates take their two individual turns back-to-back before the turn passes to the other team.
It's tempting to assume 2HG just means "four-player Commander, but two of the seats share a life total," with turns still going around the table one player at a time. That's not how it works. In official Two-Headed Giant rules (the same rules Wizards' own 2HG Duel Decks products use), each team takes both of its members' turns consecutively before the other team gets a turn at all.
Seating goes around the table as Team A - Player 1, Team A - Player 2, Team B - Player 1, Team B - Player 2, because teammates sit next to each other.
A1 takes an entire turn: untap, upkeep, draw, main phase, combat, second main, end step. Priority passes normally, so Team B can respond at instant speed the whole way through.
The turn does not pass to Team B yet. It passes to A2, who takes a full turn of their own next.
Only after both A1 and A2 have each taken a turn does the turn finally pass to B1, and then B2.
From the outside this looks like Team A got two turns in a row. They did. That's the actual rule, not a mistake at the table.
The consequence worth sitting with: a team effectively gets two consecutive turns before the other team gets even one. That's not a bug in the format, and it's not somebody at your table misremembering the rule. It's the actual, well-documented way Two-Headed Giant turn order works. Priority passes normally throughout both of a team's turns, so the opposing team can still respond at instant speed the entire time; what changes is simply when each team's own turn happens, not who gets to react.
Turns alternate player-by-player around the table, just like a normal four-player pod.
Teammates take their two turns back-to-back, then the turn passes to the other team. A team seated A1/A2 against B1/B2 plays A1, A2, B1, B2, then back to A1, not A1, B1, A2, B2.
Life is a team resource in 2HG. Commander damage is not. The 21-damage commander damage rule is still tracked per individual player, exactly as in a normal Commander game, and it doesn't stack across a team.
This is the single most common point of confusion at a 2HG table, because it's easy to assume that once life totals merge, everything about a team merges with it. It doesn't. A commander still needs to deal 21 or more combined combat damage to one specific player to kill that player outright through the commander damage rule, exactly the same threshold and the same tracking as in a normal game →.
Concretely: if your commander has dealt 15 combat damage to one opponent and 10 to their teammate, neither player has taken lethal commander damage. The 21 doesn't stack across the team just because the two players share a life total. You'd need to land 21 or more against the same individual player before that player is out on commander damage, regardless of what their teammate has taken.
Everything else about tracking commander damage carries over unchanged. It's still tracked per attacking commander, per defending player, and it still stacks up across turns rather than needing to happen in one hit. See How to Track Commander Damage → for the mechanics of keeping that grid straight, which only gets harder in 2HG since you're now watching two players' individual totals on top of one shared life number.
A team loses when its shared life total hits zero. Because both heads draw from the same pool, life loss is inherently a team event: damage to either player subtracts from the same number, and once that number is gone, both players on that side lose together.
Other loss conditions work differently, because they're tracked per player rather than per team. Deckout (drawing from an empty library) and reaching ten or more poison counters both still apply to the individual player they happen to, not to the team as a whole. A team is only fully eliminated once its shared life total is at zero, or once both of its players are individually out some other way. Exactly how your table wants to handle a team where one player is out on an individual condition while the shared life total still has life left in it is worth a quick word before the game, since it's the kind of edge case that comes up rarely but causes an argument when it does.
This is a rules page, not a strategy guide, so the short version: shared life changes priorities more than it changes deckbuilding requirements.
Aggressive decks get stronger in 2HG, because they only need to punch through one shared pool instead of racing two separate opponents' life totals. A team splitting attackers between two boards can put more pressure on one number than either half could alone. Board wipes swing the other way: they hit twice as hard relative to what's actually been invested, since a single wrath answers two players' worth of board development at once rather than one.
Neither of those is a reason to build differently for 2HG specifically. It's a reason to expect faster games and swingier wipes than an ordinary four-player pod, and to plan your Rule 0 conversation accordingly.
Any two Commander decks can sit down and play 2HG with no special deckbuilding required. There's no partner-only mechanic and no format-specific card pool to worry about; it's the same decks you already have, played under a different set of turn and life rules. What it does need is a quick conversation up front: which starting life total, and whether both teams understand how turn order actually works before turn one.
Not agreeing on starting life before the game. 30, 40, and 60 all see real use, and there's no ruling to fall back on when a table disagrees mid-game.
Assuming turns alternate player-by-player. They don't. Say the turn order out loud before the first turn so nobody's surprised when their team's second player goes again immediately.
Forgetting commander damage still needs 21 against one player. Splitting hits across a team's two players doesn't add up to a kill.
For the rest of the logistics, from picking pods to running a smooth night generally, see Hosting a Commander Night →.
Two-Headed Giant (2HG) is a team variant where players pair up two-on-two, and each team shares one life total instead of everyone tracking their own. A team wins or loses together: if the shared life total hits zero, both players on that side lose. It's a real, printed Magic variant, not a house rule, and it's commonly adapted to Commander decks even though Commander has no official 2HG rules of its own.
Standard Two-Headed Giant's printed rule is 30 life per team. There's no official Wizards ruling for playing 2HG specifically with Commander decks, so groups vary: some keep 30, some use 40 (Commander's normal life total), and some split the difference at 60. 30 is the most defensible default since it's the actual printed rule for the variant, but agree on a number before you shuffle up.
No. Life is a shared team resource, but the 21-damage commander damage rule is still tracked per individual player, exactly like a normal game. A commander needs to deal 21 combined damage to one specific player to kill them outright; it doesn't add up across both members of a team. If your commander has hit one opponent for 15 and their teammate for 10, neither has taken lethal commander damage, because those two numbers never combine.
Teammates sit next to each other and take their two turns back-to-back before the turn passes to the other team. So a table seated A1, A2, B1, B2 plays turns in the order A1, A2, B1, B2, then back to A1. Priority still passes normally during those two turns, so the opposing team can respond at instant speed throughout. This is the rule newcomers get wrong most often, since it looks like one team is getting an extra turn. They aren't; that's just how 2HG turn order works.
Any two decks can sit down and play 2HG with zero deckbuilding changes. Shared life does change which strategies are strongest, though: aggressive decks get better since they only need to punch through one pool instead of two separate ones, and board wipes hit twice as hard relative to the two players' combined investment in the board.
A team loses once its shared life total reaches zero, which is a team event by definition since both heads draw from the same pool. Other loss conditions, like deckout or ten-plus poison counters, are tracked per player rather than per team, so a team isn't necessarily finished just because one player would have lost on an individual condition while their side still has life. Talk through edge cases like this with your pod before they come up.
TurnZero HQ supports Two-Headed Giant as a real pod type: shared life totals per team, commander damage still tracked per individual player, turns handled correctly for both heads.
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