CommanderModernLegacyVintage
Result
Infinite creature tokens, Infinite ETB
Activate Barrenton Medic by tapping it, creating a 1/1 Elf Warrior creature token.
The Elf Warrior enters the battlefield, triggering Ivy Lane Denizen, putting a +1/+1 counter on Barrenton Medic.
Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.
Component Cards
How It Works
1
Activate Barrenton Medic by tapping it, creating a 1/1 Elf Warrior creature token.
The Elf Warrior enters the battlefield, triggering Ivy Lane Denizen, putting a +1/+1 counter on Barrenton Medic.
Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.