Kriegsboss der Legion

Mentor (Immer wenn diese Kreatur angreift, lege eine +1/+1-Marke auf eine angreifende Kreatur deiner Wahl, deren Stärke niedriger ist.)
Zu Beginn des Kampfes in deinem Zug erzeugst du einen 1/1 roten Goblin-Kreaturenspielstein. Der Spielstein erhält Eile bis zum Ende des Zuges und greift in diesem Kampf an, falls möglich.

Jefe de guerra de la Legión

Mentor. (Siempre que esta criatura ataque, pon un contador +1/+1 sobre la criatura atacante objetivo con menor fuerza.)
Al comienzo del combate en tu turno, crea una ficha de criatura Trasgo roja 1/1. Esa ficha gana la habilidad de prisa hasta el final del turno y ataca este combate si puede.

Patron de guerre de la Légion

Mentor (À chaque fois que cette créature attaque, mettez un marqueur +1/+1 sur une créature attaquante ciblée de force inférieure.)
Au début du combat pendant votre tour, créez un jeton de créature 1/1 rouge Gobelin. Ce jeton acquiert la célérité jusqu'à la fin du tour et attaque pendant ce combat si possible.

Capoguerra della Legione

Mentore (Ogniqualvolta questa creatura attacca, metti un segnalino +1/+1 su una creatura attaccante bersaglio con forza inferiore.)
All'inizio del combattimento nel tuo turno, crea una pedina creatura Goblin 1/1 rossa. Quella pedina ha rapidità fino alla fine del turno e attacca in questo combattimento, se può farlo.

軍勢の戦親分

教導（このクリーチャーが攻撃するたび、パワーがこれよりも小さい攻撃クリーチャー１体を対象とする。それの上に＋１/＋１カウンター１個を置く。）
あなたのターンの戦闘の開始時に、赤の１/１のゴブリン・クリーチャー・トークン１体を生成する。ターン終了時まで、そのトークンは速攻を得る。この戦闘で、そのトークンは可能なら攻撃する。

Chefe-de-guerra da Legião

Mentor (Toda vez que esta criatura atacar, coloque um marcador +1/+1 na criatura atacante alvo com poder inferior.)
No início do combate no seu turno, crie uma ficha de criatura Goblin vermelha 1/1. A ficha ganha ímpeto até o final do turno e ataca neste combate se estiver apta.

Legion Warboss

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
At the beginning of combat on your turn, create a 1/1 red Goblin creature token. That token gains haste until end of turn and attacks this combat if able.

Ravnica Remastered

Mentor
At the beginning of combat on your turn, create a 1/1 red Goblin creature token. That token gains haste until end of turn and attacks this combat if able.

Phyrexia: All Will Be One Commander

Guilds of Ravnica Promos

If the creature with mentor leaves the battlefield with mentor on the stack, use its power as that creature last existed on the battlefield to determine whether the target creature has less power.

If the target creature's power is no longer less than the attacking creature's power as the ability resolves, mentor doesn't add a +1/+1 counter. For example, if two 3/3 creatures with mentor attack and both mentor triggers target the same 2/2 creature, the first to resolve puts a +1/+1 counter on it and the second does nothing.

If the token can't attack for any reason (such as becoming tapped), then it doesn't attack. If there's a cost associated with having it attack, its controller isn't forced to pay that cost, so it doesn't have to attack in that case either.

Mentor compares the power of the creature with mentor with that of the target creature at two different times: once as the triggered ability is put onto the stack, and once as the triggered ability resolves. If you wish to raise a creature's power so its mentor ability can target a bigger creature, the last chance you have to do so is during the beginning of combat step.