Daxos, Thief of Meletis

Daxos can't be blocked and can't block.
Haste
Whenever Daxos deals combat damage to a
player, that player exiles the top card of their
library. You deal damage equal to that card's converted mana cost to any target. Until end of
turn, you may cast that card and you may spend
mana as though it were mana of any color to cast
that spell.