Ghave, Guru of Spores, Earthcraft, and Good-Fortune Unicorn

Prerequisites

• Ghave, Guru of Spores on the battlefield
• Earthcraft on the battlefield
• Good-Fortune Unicorn on the battlefield
• There is a +1/+1 counter on a creature you control
• You control a basic land

Steps

1. Activate a basic land by tapping it, adding
2. Activate Ghave's first ability by paying and removing a +1/+1 counter from a creature you control, creating a 1/1 Saproling token
3. When the Saproling enters the battlefield, Good-Fortune Unicorn triggers, putting a +1/+1 counter on the Saproling
4. Activate Earthcraft by tapping the Saproling token, untapping a basic land
5. Repeat

Results

• Infinite ETB
• Infinite tapped creature tokens