Splinter Twin + Nurturing Presence + Cinderhaze Wretch

Splinter Twin

Nurturing Presence

Cinderhaze Wretch

How it works

1. Activate Cinderhaze Wretch by tapping it, creating a token copy of itself with haste.
2. When the Cinderhaze Wretch token enters the battlefield, the nontoken Cinderhaze Wretch triggers, giving itself +1/+1 until end of turn.
3. Activate Cinderhaze Wretch by putting a -1/-1 counter on it, untapping it.
4. Repeat.