Kaervek the Merciless

Legendary Creature - Human Shaman 5/4, 5BR (7)
Whenever an opponent casts a spell, Kaervek the Merciless deals damage to target creature or player equal to that spell's converted mana cost.¹
"Rats and jackals feast in his swath, but even they will not walk with him." —Mangara
Illus. rk post

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/9)	Time Spiral (Rare)