Mossborn Hydra card art

Mossborn Hydra

Creature — Elemental Hydra MV 3

Tracked across real Commander games played through TurnZero HQ.

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What it doesCombosRulingsIn the 99Every version

What it does

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

This creature enters with a +1/+1 counter on it.

Landfall — Whenever a land you control enters, double the number of +1/+1 counters on this creature.

Combos with Mossborn Hydra

Lines this card is part of — what it needs alongside it, and what the two of them do. An infinite result is the one that moves a deck's bracket.

Combo data from Commander Spellbook, the community-maintained database of Magic combos. Mirrored nightly.

Rulings

5 official rulings, in the order Wizards published them.

  • 2024-11-08

    If Mossborn Hydra somehow enters at the same time as one or more other lands you control, its last ability triggers for each of those lands.

  • 2024-11-08

    A landfall ability doesn't trigger if a permanent already on the battlefield becomes a land.

  • 2024-11-08

    To double the number of +1/+1 counters on Mossborn Hydra, put a number of +1/+1 counters on it equal to the number it already has. Other cards that interact with putting counters on it will interact with this effect accordingly.

  • 2024-11-08

    Whenever a land you control enters, each landfall ability of the permanents you control will trigger. You can put them   on the stack in any order. The last ability you put on the stack will be the first one to resolve (As a result, you can have those abilities resolve in the order of your choosing.).

  • 2024-11-08

    A landfall ability triggers whenever a land you control enters for any reason. It triggers whenever you play a land, as well as whenever a spell or ability puts a land onto the battlefield under your control.

Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.

In the 99

Every deck whose current list includes Mossborn Hydra, whatever its commander.

Decks running it 6
Games played 0
Win rate — Fewer than 5 completed games — not enough to publish a rate yet.
Confirmed on board 0 Games where a board photo caught it actually in play.

Most played under

Commander Decks Games Win rate
Bess, Soul Nourisher 1 0 —
Omnath, Locus of Creation 1 0 —
Tifa Lockhart 1 0 —
Toph, the First Metalbender 1 0 —

Colors it shows up in

  • Mono-Green 1 deck
  • Selesnya 1 deck
  • Naya 1 deck
  • Four-Color (no Black) 1 deck

Every version of Mossborn Hydra

6 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly — a printing with no figure shows a dash rather than a zero, because Scryfall genuinely publishes none for some of them.

Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Mossborn Hydra — a name search across every version, for the printings TCGplayer publishes no direct link to.

Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only — no individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.