Adepte optimiste {W}

Créature : humain et psychagogue

Entraînement (À chaque fois que cette créature attaque avec une autre créature de force supérieure, mettez un marqueur +1/+1 sur cette créature.)

{2}{W}, retirez deux marqueurs +1/+1 parmi des créatures que vous contrôlez : Détruisez un artefact ciblé ou un enchantement ciblé.

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Only the English version of a Magic card receives Oracle updates and errata. View this card in English. (Scryfall note)
A creature's training ability triggers only when both that creature and a creature with greater power are declared as attackers. Increasing a creature's power after attackers are declared won't cause a training ability to trigger. (2021-11-19)

Once a creature's training ability has triggered, destroying the other attacking creature or reducing its power won't stop the creature with training from getting a +1/+1 counter. (2021-11-19)