Marluxia, Graceful Assassin

Deathtouch, First Strike, Vigilance

When Marluxia enters the battlefield, each player gets 11 petal counters and an emblem with, "At the beginning of your upkeep, remove a petal counter. When you have no petal counters, you lose the
game."

Whenever Marluxia deals combat damage, you may
remove X petal counters from target opponent
where X is the damage dealt.