Live Play Data

Terrasymbiosis

· Enchantment · Edge of Eternities (EOE)

Live Inclusion

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Times Brought

825

Decks Running

394

Median Cast Turn

Drawn → Played

64%

Format

Multiplayer 1v1

31% of games where Terrasymbiosis resolved ended in a win for the caster, a +6.9 percentage-point lift over decks that never cast it, across 110 tracked participations.

Terrasymbiosis is a green enchantment from Edge of Eternities that converts +1/+1 counter triggers into card draws, up to once per turn. Across 785 tracked multiplayer Commander games, decks that resolved it won at 31%, compared to 24% for participations where the card sat unplayed in the library. That +6.9 pp gap is an early signal that the engine it enables is real, though the sample is still growing and the direction should be treated as directional rather than conclusive.

Inclusion stands at 5% of tracked decks, a modest share that reflects the card's narrow requirement: a dedicated +1/+1 counter shell. The median first cast lands on turn 6, later than the card's 3-mana cost alone would suggest. That lag is structural. Players generally want a counter-generating creature in play before committing to the enchantment, so turn 6 is the natural slot rather than a sign of hesitation. Of 185 drawn copies, 64% were cast before the game ended.

The commander distribution spans 353 distinct players, with no single contributor exceeding 3% of instances. That spread adds credibility to what we see so far, even at this stage of data collection.

At a glance

5% of tracked Commander decks include Terrasymbiosis
64% of drawn copies were cast before the game ended
T6 median first-cast turn, reflecting setup dependency on a counter engine
82% battlefield stickiness once the enchantment resolves
+6.9pp win-rate lift when cast versus sitting unplayed in the library
353 distinct players contributing data, a well-spread sample for this card

First-cast turn

n=119

13%

17%

14%

45%

T6-9

T10+

Median 6 P25 4 · P75 7 · max 19

On curve 15% (15 / 119 cast on T3) Cast same turn as drawn 35%

The "good card" funnel

825 brought · 353 players

Brought to game

825

Ever drawn

185

Reached battlefield

119

Still on board at game end

64%

Of 825 Terrasymbiosis copies brought to games, 185 were drawn, 119 of those were cast, and the large majority of resolved copies remained on the battlefield through the end of the game.

≥ -1.9pp

Players who cast this card win 31% of the time (n=110) , vs 24% when it never left the library (n=563).

When players drew this card but left it in hand, they won 28% (n=58) — about the same as leaving it in the library. Those players survived long enough to draw it, so the gap above is about the card resolving, not just about surviving.

Observed gap +6.9pp; 95% confidence interval -1.9pp to +15.7pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

198 instances

1.5%

Library

49.0%

Battlefield

16.2%

Graveyard

3.5%

Exile

Most Terrasymbiosis copies finish on the battlefield when resolved, a strong stickiness signal for a non-creature permanent in a format where enchantment removal is common.

Commanders that played this card

in tracked games

The top commander slots are spread across counter-centric strategies in green-blue, green-white, and green-red, confirming Terrasymbiosis fits any shell that generates +1/+1 counters rather than a single niche archetype.

Frequently Asked

How often is Terrasymbiosis drawn and cast in a Commander game?

In 785 tracked multiplayer games where Terrasymbiosis was in the deck, it was drawn 22% of the time. That is consistent with a singleton in a 100-card deck. Of 185 copies that reached a player's hand, 64% were cast before the game ended. The remainder were largely a game-length effect: copies drawn late in a closing game that never found a window.

What turn does Terrasymbiosis typically hit the battlefield?

The median first cast is turn 6, with the middle 50% of casts landing between turns 4 and 7. At 3 mana, the card is castable from turn 3 onward, but the on-curve rate is low. Most pilots appear to wait until a counter-generating creature is already in play before tapping out for the enchantment, which pushes the median a few turns later than the raw mana cost implies.

Does casting Terrasymbiosis actually improve your win rate?

Directionally, yes. Participations where Terrasymbiosis was cast show a win rate of 31% versus 24% for participations where it never left the library. The +6.9 pp gap is the controlled signal. However, the sample across 110 cast participations is still building, so treat this as an early, consistent signal rather than a definitive conclusion. The lower confidence bound on the delta is positive, which is encouraging.

Which commanders use Terrasymbiosis most?

Toph, the First Metalbender leads the raw deck count at 825 total instances brought. Zimone, Infinite Analyst, T'Challa, the Black Panther, and The Astonishing Ant-Man each appear prominently. The common thread is a commander that either places +1/+1 counters natively or rewards creature growth, making the repeated card-draw trigger consistently available.

Is Terrasymbiosis legal in formats outside Commander?

Terrasymbiosis is legal in Commander, Legacy, Modern, Pioneer, Standard, Historic, Vintage, Brawl, Alchemy, Gladiator, Oathbreaker, Timeless, and Duel Commander. It is not legal in Pauper, Pauper Commander, or Old School formats. The card is a rare from Edge of Eternities, so Pauper legality was never a consideration.

How concentrated is the Terrasymbiosis data across players?

353 distinct players have brought Terrasymbiosis to a tracked game. The single heaviest contributor accounts for 3% of all instances, well below the threshold where one player's personal results could skew the aggregate. This spread across a large player pool is a strength of the current dataset and makes the directional win-rate signal more credible than it would be with a narrow contributor base.