Teshar, Ancestor's Apostle, Scrap Trawler, Krark-Clan Ironworks, and Lotus Petal

Prerequisites

• Teshar, Ancestor's Apostle on the battlefield
• Scrap Trawler in the graveyard
• Krark-Clan Ironworks on the battlefield
• Lotus Petal in hand

Steps

1. Cast Lotus Petal by paying its mana cost
2. Teshar triggers, returning Scrap Trawler from your graveyard to the battlefield
3. Activate Lotus Petal by tapping and sacrificing it
4. Activate Krark-Clan Ironworks by sacrificing Scrap Trawler
5. When Scrap Trawler dies, it triggers, returning Lotus Petal from your graveyard to your hand
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite storm count