Prince Xavalis
Type: Monster Ally
Cost: 3
Faction: Neutral
Race: Demon
Attack: 4
Damage Type: Shadow
Health: 3
Rules:
At the end of your turn, if an opposing hero has 15 or more damage on it, put a 1 / 1 Terror Fiend Demon Monster ally token into play with "When this ally deals combat damage to a hero, destroy that hero."
Set: Crown of the Heavens (147)