The_Urg3, Cyber Enforcer

Menace, First Strike
Whenever The_Urg3 deals combat damage to a player, you may exile the top two cards of that player’s library. Until the end of your next turn, you may cast one of those cards without paying its cost.
{2}{u}{b}: Surveil 3
{r}: Sacrifice an artifact: Deal 3 damage to any target.
"In a world of corrupted code and twisted steel, I am the firewall that strikes back."