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 counter(s) on it and it becomes monstrous.).
When Death Kiss becomes monstrous,
goad (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.) up to X target creatures your opponents control.