Steward of the Harvest, Staff of Domination, and Gaea's Cradle

Prerequisites

• Steward of the Harvest on the battlefield
• Staff of Domination on the battlefield
• Gaea's Cradle in exile

Steps

1. Activate a creature using Gaea's Cradle's ability by tapping it, adding at least Activate Staff of Domination's third ability by paying , untapping the creature
2. Activate Staff of Domination's first ability by paying , untapping it
3. Repeat

Results

• Infinite lifegain triggers
• Infinite lifegain
• Infinite card draw
• Infinite green mana
• Infinite untap of creatures you control
• Infinite draw triggers
• Infinite mana creatures you control can produce