Halo Fountain, Ioreth of the Healing House, and Incubation Druid

Prerequisites

• Halo Fountain on the battlefield
• Ioreth of the Healing House on the battlefield
• Incubation Druid on the battlefield

Steps

1. Activate Incubation Druid by tapping it, adding Activate Ioreth of the Healing House by tapping it, targeting Halo Fountain
2. Holding priority, activate Halo Fountain by paying , tapping it, and untapping Ioreth of the Healing House and Incubation Druid, causing you to draw a card
3. Resolve the Ioreth of the Healing House ability, untapping Halo Fountain
4. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite creature ETB
• Near-infinite creature tokens