Mut ansammeln

Einberufen (Jede Kreatur, die du tappst, während du diesen Zauberspruch spielst, reduziert dessen Kosten um {1} oder um ein Mana der Farbe jener Kreatur.)
Eine Kreatur deiner Wahl erhält +2/+2 bis zum Ende des Zuges.

Armarse de valor

Convocar (Cada criatura que gires al jugar este hechizo reduce su coste en {1} o en un maná del color de esa criatura.)
La criatura objetivo obtiene +2/+2 hasta el final del turno.

Rassembler son courage

Convocation (Chaque créature que vous engagez en jouant ce sort réduit son coût de {1} ou d'un mana de la couleur de cette créature.)
La créature ciblée gagne +2/+2 jusqu'à la fin du tour.

Raccogliere il Coraggio

Convocazione (Ciascuna creatura che TAPpi mentre giochi questa magia riduce il suo costo di {1} o di un mana del colore di quella creatura.)
La creatura bersaglio prende +2/+2 fino alla fine del turno.

かき集める勇気

召集 （あなたがこの呪文をプレイする段階であなたがタップした各クリーチャーにつき、この呪文のコストはそのクリーチャーの色のマナ１点か{1}少なくなる。）
クリーチャー１体を対象とする。それはターン終了時まで＋２/＋２の修整を受ける。

Concentração de Coragem

Convocar (Cada criatura que você vira ao jogar esta mágica reduz seu custo em {1} ou em um mana da cor daquela criatura.)
A criatura alvo recebe +2/+2 até o final do turno.

Набраться мужества

Созыв (Когда вы разыгрываете это заклинание, каждое повернутое существо уменьшает стоимость заклинания на {1} или на один пункт маны цвета этого существа).
Целевое существо получает +2/+2 до конца хода.

鼓舞勇气

召集（使用此咒语时，你每为它横置一个生物，便可以少支付{1}，或一点所横置生物颜色的法术力。）
目标生物得+2/+2直到回合结束。

Gather Courage

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Target creature gets +2/+2 until end of turn.

Ravnica Remastered

The List

GRN Guild Kit

Magic 2015

Ravnica: City of Guilds

Convoke (Each creature you tap while playing this spell reduces its cost by {1} or by one mana of that creature's color.)
Target creature gets +2/+2 until end of turn.

Because convoke isn't an alternative cost, it can be used in conjunction with alternative costs.

If a creature you control has a mana ability with {T} in the cost, activating that ability while casting a spell with convoke will result in the creature being tapped before you pay the spell's costs. You won't be able to tap it again for convoke. Similarly, if you sacrifice a creature to activate a mana ability while casting a spell with convoke, that creature won't be on the battlefield when you pay the spell's costs, so you won't be able to tap it for convoke.

Tapping a multicolored creature using convoke will pay for {1} or one mana of your choice of any of that creature's colors.

Tapping an untapped creature that's attacking or blocking to convoke a spell won't cause that creature to stop attacking or blocking.

When calculating a spell's total cost, include any alternative costs, additional costs, or anything else that increases or reduces the cost to cast the spell. Convoke applies after the total cost is calculated. Convoke doesn't change a spell's mana cost or mana value.

You can tap any untapped creature you control to convoke a spell, even one you haven't controlled continuously since the beginning of your most recent turn.