Ghave, Guru of Spores, Good-Fortune Unicorn, and Ashnod's Altar

Prerequisites

• Ghave, Guru of Spores on the battlefield
• Good-Fortune Unicorn on the battlefield
• Ashnod's Altar on the battlefield
• You control a creature with a +1/+1 counter on it
• available

Steps

1. Activate Ghave's first ability by paying and removing a +1/+1 counter from a creature you control, creating a 1/1 Saproling creature token
2. The Saproling creature token enters the battlefield, triggering Good-Fortune Unicorn, putting a +1/+1 counter on the Saproling token
3. Activate Ghave's first ability by paying and removing a +1/+1 counter from a Saproling, creating another 1/1 Saproling creature token
4. The Saproling creature token enters the battlefield, triggering Good-Fortune Unicorn, putting a +1/+1 counter on the Saproling token
5. Activate Ashnod's Altar by sacrificing a Saproling token without a +1/+1 counter, adding
6. Repeat from step 3

Results

• Infinite ETB
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite LTB
• Infinite sacrifice triggers
• Infinite +1/+1 counters