Garth One-Eye, Necrotic Ooze, Tireless Tribe, and Barrenton Medic

Prerequisites

• Garth One-Eye in the graveyard
• Necrotic Ooze on the battlefield
• Tireless Tribe in the graveyard
• Barrenton Medic in the graveyard
• Necrotic Ooze does not have summoning sickness

Steps

1. Activate Necrotic Ooze using Garth One-Eye's ability by tapping it, causing you to pay to cast a copy of Black Lotus
2. Activate Black Lotus by tapping and sacrificing it, adding
3. Activate Necrotic Ooze using Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it
4. Activate Necrotic Ooze using Garth One-Eye's ability by tapping it, causing you to pay to cast a copy of Regrowth
5. Resolve Regrowth, returning Garth One-Eye to your hand from your graveyard
6. Activate Necrotic Ooze using Tireless Tribe's ability by discarding Garth One-Eye, giving Necrotic Ooze +0/+4 until end of turn
7. Activate Necrotic Ooze using Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it
8. Repeat
9. Once you have infinite , you may sacrifice Black Lotus for any other color of mana, and use that to cast any other spells from Garth One-Eye's ability

Results

• Infinite Black Lotus tokens
• Infinite card draw for any number of players
• Infinite casts of all spells permitted by Garth One-Eye
• Infinite colored mana
• Infinite creature tokens
• Infinite draw triggers for any number of players
• Infinite magecraft triggers
• Infinite self-discard triggers
• Infinite storm count
• Infinite ETB
• Return all cards from your graveyard to your hand
• Infinitely powerful Shivan Dragons until end of turn