Precon Upgrade Guide
Peer Through Time Upgrade Guide
What to cut, what to add, and how to play the mono-blue control precon from Commander 2014, commanded by Teferi, Temporal Archmage.
Commander 2014
Peer Through Time
Filter your draws and untap what you need, a calm mono-blue plan. Out of the box, before any upgrades. How we rate precons
Buy Peer Through Time on TCGplayer →Quick verdict
Peer Through Time is a mono-blue mana and card-draw deck whose commander turns every big mana rock into extra mana each turn. Teferi, Temporal Archmage untaps up to four permanents, so a board of lands and rocks like Thran Dynamo gets used twice, and that mana goes into card draw and expensive creatures. The trouble is how expensive those creatures are. Several cost eight or nine mana, the deck has only a couple of real counterspells for a blue deck, and nothing helps Teferi reach his emblem.
TurnZero HQ rates Peer Through Time a 2 out of 5 on difficulty and a 3 out of 5 on power, as it comes in the box. That is our editorial read, not an official Wizards rating. The full hundred cards are on the Peer Through Time decklist page, and every other precon we cover is on the precon directory.
How the precon plays
Teferi, Temporal Archmage is a six-mana planeswalker. His +1 looks at the top two cards of your library, puts one in your hand and the other on the bottom. His −1 untaps up to four target permanents. His −10 gives you an emblem that lets you activate loyalty abilities of your planeswalkers at instant speed on any player's turn.
The −1 is the engine. Tap your lands and rocks for mana, cast something, then untap four of them and spend the mana again. With Thran Dynamo , Dreamstone Hedron or Worn Powerstone among the targets, one −1 can be worth eight or more extra mana. You can also untap a creature with a tap ability, like Stitcher Geralf , to use it twice.
The rest of the deck turns that mana into cards and a few large threats. Stroke of Genius , Rush of Knowledge and Sphinx of Magosi all scale with how much mana you have. Frost Titan , Sphinx of Jwar Isle and Stormsurge Kraken close the game, and Cyclonic Rift overloaded for seven mana clears every opponent's board on the last turn.
What works out of the box
Teferi, Temporal Archmage ↗
Untaps four lands or rocks each time you use his minus ability, which is the deck's ramp, and his plus ability digs for the card you need.
Thran Dynamo ↗
Four mana for a rock that adds three. Untapped by Teferi, it gives back the whole cost in a single turn.
Stroke of Genius ↗
An instant that draws X cards. Teferi's untap turns it into a big refill at the end of an opponent's turn.
Frost Titan ↗
Taps down a permanent on entering and on each attack, and it stays locked through the next untap. It also taxes every targeted spell aimed at it.
Cyclonic Rift ↗
Two mana to bounce one problem, or seven to bounce every nonland permanent your opponents control. Teferi's untaps make the overload easier to reach.
Mulldrifter ↗
Draws two cards either as a five-mana flier or as a three-mana spell. Cheap card advantage the deck needs.
What needs improvement
The top of the curve is very heavy. Lorthos, the Tidemaker and Hoverguard Sweepers cost eight, Breaching Leviathan and Artisan of Kozilek cost nine, and several more sit at seven. Even with Teferi untapping rocks, a hand full of these can stall for turns while opponents develop.
For a blue deck there is very little that stops a spell. Exclude only counters creatures and Dismiss costs four, so an opponent's board wipe or combo resolves most of the time. Teferi also spends loyalty on his −1, and nothing in the deck adds loyalty to push him toward the emblem. See how much removal a Commander deck needs for a rough target.
Upgrade ideas
Each upgrade below starts from something the deck does poorly and says what a replacement card has to do. The cards named are examples, not the only answer: if you own something else that does the same job, or a newer printing does it better, it goes in the same slot. Make one change at a time and play a few games between them, so you can tell which change helped. The general method is in how to upgrade a Commander precon →
1. Add cheap counterspells
The deck has the mana to hold up interaction thanks to Teferi, but almost nothing to spend it on. Two-mana counters protect Teferi and stop opponents' board wipes.
What to look for Counterspells costing two mana or less that can hit any spell, or at least the noncreature spells that threaten a planeswalker deck.
Cut, for example
Crown of Doom While you control it, creatures attacking you or Teferi get +2/+0. You can pay two to give it to an opponent, but that is a lot of effort for a card that starts out hurting you.
Domineering Will Four mana to borrow three creatures as blockers for one turn. It is a narrow defensive trick that a counterspell covers more often.
Add, for example
Counterspell ↗
Two blue mana, counters any spell. The baseline for this slot.
Arcane Denial ↗
Two mana to counter any spell. The opponent draws up to two cards later and you draw one, a price that is usually worth paying.
Negate ↗
Two mana to counter a noncreature spell, which covers board wipes and most removal aimed at Teferi.
2. Proliferate Teferi toward his emblem
Teferi gains loyalty slowly and spends it on the −1, so the emblem rarely happens. Proliferate adds a loyalty counter with each trigger and lets you use the −1 more often.
What to look for Blue cards that proliferate repeatedly or as a bonus on a spell you would play anyway.
Cut, for example
Intellectual Offering Five mana where an opponent draws three cards or untaps their permanents too. Teferi does the untap half better on his own.
Tormod's Crypt One-shot graveyard hate. Useful in some groups, but it doesn't move your own plan forward.
Add, for example
Flux Channeler ↗
Proliferates every time you cast a noncreature spell, and this deck casts many of them.
Thrummingbird ↗
Two-mana flier that proliferates when it deals combat damage to a player.
Contagion Clasp ↗
A two-mana artifact that proliferates for four mana each turn. Teferi can untap it to activate it twice.
Tezzeret's Gambit ↗
Draws two cards and proliferates, and the blue mana can be paid with 2 life instead.
3. Make Teferi's untap worth more
Teferi's −1 untaps four permanents no matter what they are, so every rock that taps for three makes the ability better. The small and tapped rocks in the box get less from it.
What to look for Mana rocks that add two or more mana, or that enter untapped for two mana or less.
Cut, for example
Ur-Golem's Eye Four mana for two colorless. Thran Dynamo does the same job for one more mana and adds three.
Sky Diamond Enters tapped and adds one blue. An untapped two-mana rock is better on every turn.
Add, for example
4. Trade the eight- and nine-drops for instant-speed draw
The biggest creatures cost more than the board state can usually wait for. Instants that draw several cards keep the mana useful on opponents' turns and find the threats you already have.
What to look for Instants that draw two or more cards or scale with your mana, and flexible spells that counter or bounce at the same time.
Cut, for example
Breaching Leviathan Nine mana, and it only taps nonblue creatures when cast from hand. Most games end before it pays off.
Hoverguard Sweepers Eight mana for a flier that bounces two creatures. Cyclonic Rift does the bouncing for less.
Lorthos, the Tidemaker Eight mana to cast and eight more each attack to use its ability. It asks for far more mana than any other card in the deck.
Add, for example
Fact or Fiction ↗
Four-mana instant that reveals five cards and gives you one of two piles. Good at the end of an opponent's turn.
Mystic Confluence ↗
Five-mana instant with three modes: a soft counterspell, a creature bounce, or a card draw, in any mix.
Pull from Tomorrow ↗
An instant that draws X cards, then you discard one. A second copy of Stroke of Genius for this deck.
Win conditions
The deck wins with a few large threats backed by more cards than anyone else. Use Teferi to ramp into Frost Titan , Sphinx of Jwar Isle or Stormsurge Kraken , keep opponents' answers in check with counterspells, and overload Cyclonic Rift on the turn you plan to swing for lethal. Rite of Replication kicked on a big creature is a backup finisher in a long game.
Who should buy this precon
A good choice for someone who wants to learn blue control in a simple shell. The deck is mostly lands, rocks, card draw and a few big creatures, and Teferi's choice each turn is easy to follow. It suits a patient player; anyone who wants to attack early will find the precon slow until the top end is trimmed.
Checked against the printed decklist on October 10, 2026.
Track how the upgrades actually perform.
TurnZero HQ keeps a win rate per deck version, so you can change a few cards, play some games, and see the difference instead of guessing.
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