Zekrypt, Herald of Dread

0: Whenever one of your creatures dies, put a +X/+X counter on target creature equal to destroyed creature's power and toughness.
+2: Select an untapped creature anywhere on the battlefield, it becomes a fungus creature under your control.
-5: All creatures under your control gain Infect until end of turn. If they are a Fungus creature, they gain Infect permanently.