All 64 Combos with Barrenton Medic

Myrkul, Lord of Bones + Barrenton Medic

Lock: Prevent all damage that would be dealt to you, Lock, Prevent all damage that would be dealt to permanents you control

Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it. Repeat step 1 until Barrenton Medic dies as a state-based action due to having zero or less toughness. Myrkul triggers, causing you to exile Barrenton Medic and create a token copy of Barrenton Medic that is an enchantment and loses all other card types. Whenever damage would be dealt to you or a permanent you control, activate the Barrenton Medic token's first ability by tapping it, preventing one damage to you or that permanent. Activate the Barrenton Medic token's second ability by putting a -1/-1 counter on it, untapping it. Repeat from step 4 as necessary.