Gentravas, Entropy's Scion

Entropy 3 (When this creature deals combat damage
to a player, that player searches their library for three spells, exiles them, then shuffles.)

During your upkeep, each player searches their
library for a spell, exiles it, then shuffles.

{t}, exile the top card of your library: Prevent all
damage that would be dealt to you this turn by a
single source.