Dreadhorde Twins
{3}{R}
Creature -- Zombie Jackal Warrior
2/2
When ~this~ enters, amass Zombies 2. (Put two +1/+1 counters 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.)
Zombie tokens you control have trample.