Mezerick, Eternal Artisan

Lifelink, deathtouch.
If you would amass, you may instead create
a 1/1 black Zombie Army token and put
that many +1/+1 counters on an army of
your choice instead.
Whenever a zombie you control attacks, you
may pay {u/b}{u/b}. If you do amass 2.
Partner with Marlin.