Dreadhorde Invasion

At the beginning of your upkeep, you lose 1
life and amass Zombies 1. (Put a +1/+1 counter
on an Army you control. It's also a Zombie. If
you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Whenever a Zombie token you control with
power 6 or greater attacks, it gains lifelink
until end of turn.