Mizutsune, Bewitching Dancer

Whenever you cast a sorcery or instant spell, put a bubble counter on target creature an opponent controls (A creature with a bubble counter on it have -0/-2, if the counters are 2 or more, that creature doesn't untap during his controller's upkeep, when the creature is dealt damage, remove all bubble counters)

Whenever one or more bubble counters are removed from a creature, that creature is dealt that much damage

If a creature would die before bubble counters are removed, draw cards equal to the n