Dargo, the Shipwrecker, Agatha's Soul Cauldron, First Day of Class, and Catalyst Elemental

Prerequisites

• Dargo, the Shipwrecker in the command zone
• Agatha's Soul Cauldron on the battlefield
• First Day of Class in hand
• Catalyst Elemental in exile
• undefined available

Steps

1. Cast First Day of Class by paying
2. Cast Dargo from the command zone by paying
3. When Dargo enters the battlefield, First Day of Class triggers, putting a +1/+1 counter on Dargo
4. Activate Dargo using Catalyst Elemental's ability by sacrificing it, adding
5. Choose to return Dargo from your graveyard to the command zone
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite red mana
• Infinite commander casts