兜砕きのズルゴ

速攻
兜砕きのズルゴは可能なら各戦闘で攻撃する。
あなたのターンであるかぎり、兜砕きのズルゴは破壊不能を持つ。
このターンに兜砕きのズルゴによってダメージを与えられたクリーチャーが１体死亡するたび、兜砕きのズルゴの上に＋１/＋１カウンターを１個置く。

Zurgo Helmsmasher

Haste
Zurgo attacks each combat if able.
During your turn, Zurgo has indestructible.
Whenever a creature dealt damage by Zurgo this turn dies, put a +1/+1 counter on Zurgo.

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Haste
Zurgo Helmsmasher attacks each combat if able.
Zurgo Helmsmasher has indestructible as long as it's your turn.
Whenever a creature dealt damage by Zurgo Helmsmasher this turn dies, put a +1/+1 counter on Zurgo Helmsmasher.

Duel Decks: Speed vs. Cunning

Each time a creature dies, check whether Zurgo had dealt any damage to it at any time during that turn. If so, Zurgo's ability will trigger. It doesn't matter who controlled the creature or whose graveyard it went to.

If Zurgo enters the battlefield before the combat phase, it will attack that turn if able. If it enters the battlefield after combat, it won't attack that turn and will usually be available to block on the following turn.

If, during your declare attackers step, Zurgo is tapped or is affected by a spell or ability that says it can't attack, then it doesn't attack. If there's a cost associated with having Zurgo attack, you aren't forced to pay that cost, so it doesn't have to attack in that case either.