Uki, Physician's Assistant

Deathtouch
Whenever you put one or more -1/-1 counters on
a creature, create a 1/1 green Phyrexian Saproling creature token.
{t}: Remove a -1/-1 counter from a creature
you control, put a -1/-1 counter on another target creature.
Choose a background(You can have a Background
as a second commander.)