Viruk , Lord of Profane Rites

Flying, Haste
Whenever Viruk deals combat damage to a player
or planeswalker, you may sacrifice a creature. If
you do, create 3 treasure tokens.
Whenever you cast a spell, if mana from a treasure
was spent to cast it, it deals damage equal to its
mana value to any target. If that spell's mana value
was 5 or more, it deals that much damage to each
of up to two targets instead.