Salkeda, Skirge Overlord

Flying, Infect
Whenever a token creature you control dies,
draw a card
Creature tokens get +1+2, and "Pay 2 life and sacrifice this creature: Put a -1-1 counter on up
to one target creature and a +1+1 counter on up
to one target creature"
{b}{r}{g}{w}, Pay 2 life: Proliferate