Zombie Horde

On Reveal: Horde +3. On Reveal: Horde +2, then this gains Power equal to your Zombie Horde. On Reveal: Horde +2. Activate: Give 4 of your created cards +1 Power. On Reveal and When Destroyed: Horde +3. After you play a card here, Horde +2. On Reveal: Horde +1 for each of your cards at the right location. On Reveal: Destroy your first other card here. After one of your other cards is destroyed, Horde +2.