Havengul Lich, Rooftop Storm, Grimgrin, Corpse-Born, and Earthcraft

Prerequisites

• Havengul Lich on the battlefield
• Rooftop Storm on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• Earthcraft on the battlefield

Steps

1. Activate a basic land by tapping it, adding one mana
2. Activate Earthcraft by tapping Grimgrin, untapping a basic land
3. Activate Havengul Lich by paying , allowing you to cast the Zombie card from your graveyard this turn
4. Cast the Zombie from your graveyard by paying due to Rooftop Storm
5. Activate a basic land by tapping it, adding one mana
6. Activate Earthcraft by tapping Grimgrin, untapping a basic land
7. Activate Grimgrin by sacrificing the Zombie, untapping Grimgrin and putting a +1/+1 counter on it
8. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite mana basic lands you control can produce
• Infinite untap of basic lands you control