Sylvan Offering + Aggravated Assault + Earthcraft

Prerequisites

• You control a basic Mountain.

Steps

1. 1Cast Sylvan Offering by paying , causing you and an opponent to create a 5/5 Treefolk creature token and five 1/1 Elf Warrior creature tokens.
2. 2Activate Earthcraft by tapping the Treefolk token, untapping a basic Mountain you control.
3. 3Activate the Mountain by tapping it, adding .
4. 4Repeat from step 2 five additional times, tapping the Elf Warrior tokens instead.
5. 5Activate Aggravated Assault by paying , untapping all creatures you control and giving you an extra combat and main phase after this one.
6. 6Repeat from step 2.

Effects

• Infinite combat phases
• Infinite mana basic lands you control can produce
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control