Hartzog, the Invidious

When Hartzog, the Invidious enters the battlefield, create two 5/5 indestructible Phyrexian Horror tokens with infect.
Whenever Hartzog, the Invidious deals combat damage to a player, search that players library for a nonland permanent card. Put that card on to the battlefield under your control with a corruption counter. It is a Phyrexian Mutant in addition to its other types.