Add 1 counter Choose one of your units without the Death Watch subtype. That unit gains the Death Watch subtype, loses all other subtypes, and gets +10 speed, +2 power, -2 health, and Critical Hit 2 until end of game. You may play this effect once for each arena this turn.
Remove 5 counters Choose one of your units with the Death Watch subtype. Until end of turn, that unit's damage can't be prevented. When the turn ends, put 1 damage counter on it.