Experiment Eins

Weiterentwicklung (Immer wenn eine andere Kreatur unter deiner Kontrolle ins Spiel kommt und falls deren Stärke oder Widerstandskraft höher ist, lege eine +1/+1-Marke auf diese Kreatur.)
Entferne zwei +1/+1-Marken von Experiment Eins: Regeneriere Experiment Eins.

Expérience Un

Évolution (À chaque fois qu'une créature arrive sur le champ de bataille sous votre contrôle, si sa force ou son endurance est supérieure à celle de cette créature, mettez un marqueur +1/+1 sur cette créature.)
Retirez deux marqueurs +1/+1 de l'Expérience Un : Régénérez l'Expérience Un.

実験体

進化（クリーチャー１体があなたのコントロール下で戦場に出るたび、そのクリーチャーのパワーかタフネスがこのクリーチャーよりも大きい場合、このクリーチャーの上に＋１/＋１カウンター１個を置く。）
実験体の上から＋１/＋１カウンター２個を取り除く：実験体を再生する。

首号实验体

进化（每当一个生物在你的操控下进战场时，若该生物的力量或防御力大于此生物，则在后者上放置一个+1/+1指示物。）
从首号实验体上移去两个+1/+1指示物：重生首号实验体。

Experiment One

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Remove two +1/+1 counters from this creature: Regenerate it. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Pioneer Masters

Ravnica Remastered

Evolve
Remove two +1/+1 counters from Experiment One: Regenerate Experiment One.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Remove two +1/+1 counters from Experiment One: Regenerate Experiment One. (The next time this creature would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

Double Masters 2022

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Remove two +1/+1 counters from Experiment One: Regenerate Experiment One.

If a creature enters the battlefield with +1/+1 counters on it, consider those counters when determining if evolve will trigger. For example, a 1/1 creature that enters the battlefield with two +1/+1 counters on it will cause the evolve ability of a 2/2 creature to trigger.

If evolve triggers, the stat comparison will happen again when the ability tries to resolve. If neither stat of the new creature is greater, the ability will do nothing. If the creature that entered the battlefield leaves the battlefield before evolve tries to resolve, use its last known power and toughness to compare the stats.

If multiple creatures enter the battlefield at the same time, evolve may trigger multiple times, although the stat comparison will take place each time one of those abilities tries to resolve. For example, if you control a 2/2 creature with evolve and two 3/3 creatures enter the battlefield, evolve will trigger twice. The first ability will resolve and put a +1/+1 counter on the creature with evolve. When the second ability tries to resolve, neither the power nor the toughness of the new creature is greater than that of the creature with evolve, so that ability does nothing.

When comparing the stats as the evolve ability resolves, it's possible that the stat that's greater changes from power to toughness or vice versa. If this happens, the ability will still resolve and you'll put a +1/+1 counter on the creature with evolve. For example, if you control a 2/2 creature with evolve and a 1/3 creature enters the battlefield under your control, it toughness is greater so evolve will trigger. In response, the 1/3 creature gets +2/-2. When the evolve trigger tries to resolve, its power is greater. You'll put a +1/+1 counter on the creature with evolve.

When comparing the stats of the two creatures for evolve, you always compare power to power and toughness to toughness.

Whenever a creature enters the battlefield under your control, check its power and toughness against the power and toughness of the creature with evolve. If neither stat of the new creature is greater, evolve won't trigger at all.

Because damage remains marked on a creature until it's removed as the turn ends, nonlethal damage dealt to Experiment One may become lethal if you remove +1/+1 counters from it during that turn. In this case, it dies before the activated ability that would regenerate it resolves.