Saffi Eriksdotter, Lurrus of the Dream-Den, Earthcraft, and Phyrexian Altar

Prerequisites

• Saffi Eriksdotter on the battlefield
• Lurrus of the Dream-Den on the battlefield
• Earthcraft on the battlefield
• Phyrexian Altar on the battlefield
• You control at least one basic Forest and/or basic Plains

Steps

1. Activate a basic Forest or Plains by tapping it, adding Activate Earthcraft by tapping Lurrus, untapping the Forest or Plains
2. Optionally, you may repeat steps 1 and 2, tapping Saffi instead
3. Activate Saffi by sacrificing it, targeting Lurrus
4. Activate Phyrexian Altar by sacrificing Lurrus, adding
5. When Lurrus dies, Saffi triggers, returning Lurrus from your graveyard to the battlefield
6. Cast Saffi from your graveyard by paying
7. Repeat
8. This combo nets infinite colored mana if you control a basic Forest and a basic Plains, or infinite mana lands you control can produce otherwise

Results

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