激戦の球
アーティファクト
あなたが戦闘ダメージを受けるたび、攻撃プレイヤーは激戦の球のコントロールを得て、これをアンタップする。
, 
：カード１枚を引き、激戦の球の上に得点カウンター１個を置く。その後、これの上に５個以上の得点カウンターがあるなら、これを生け贄に捧げ、宝物・トークン１つを生成する。
Illustrated by
The Lost Caverns of Ixalan#251UncommonJapaneseLegality
Rulings
In a Two-Headed Giant game, each player on the attacking team is an attacking player. When Contested Game Ball's first ability resolves, you'll choose which member of the attacking team gains control of it.
If point counters are put on Contested Game Ball some way other than its last ability, you won't sacrifice it or create a Treasure token. The check for five or more point counters happens only as the activated ability resolves.
Contested Game Ball's triggered ability triggers only once whenever you're dealt combat damage, no matter how many creatures deal combat damage to you at the same time.