Death Kiss 675/361 (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. {X}{X}{R}: 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.

NM - $9.60
LP - $7.70
MP - $5.80
HP - $3.90
DMG - $2.00