Zombie Fabricator

Whenever a card enters or leaves any graveyard you gain 5 life and each opponent loses 5 life and all creatures you control get Hexproof, Flying, Vigilance, Haste, and Lifelink until end of turn. You gain 20 life if
you control 5 creatures with +20/+20 and have Hexproof, Flying, Vigilance, Haste, and Lifelink.