Ashaya, Soul of the Wild, Ley Weaver, and Prodigal Sorcerer

Prerequisites

• Ashaya, Soul of the Wild on the battlefield
• Ley Weaver on the battlefield
• Prodigal Sorcerer on the battlefield
• Ley Weaver and Prodigal Sorcerer do not have summoning sickness

Steps

1. Activate Prodigal Sorcerer by tapping it, dealing 1 damage to any target
2. Activate Ley Weaver by tapping it, untapping itself and Prodigal Sorcerer
3. Repeat

Results

• Infinite damage
• Infinite mana lands you control can produce
• Infinite untaps of creatures you control
• Infinite untaps of lands you control