Death Kiss (CLB-675) - Commander Legends: Battle for Baldur's Gate

Whenever a creature an opponent controls attacks one of your opponents, double its power until end of turn.
: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
When this creature becomes monstrous, goad up to X target creatures your opponents control.