Halo Fountain, Kelpie Guide, and Deathbloom Ritualist

Prerequisites

• Halo Fountain on the battlefield
• Kelpie Guide on the battlefield
• Deathbloom Ritualist on the battlefield

Steps

1. Activate Deathbloom Ritualist by tapping it, adding at least Activate Kelpie Guide by tapping it, targeting Halo Fountain
2. Holding priority, activate Halo Fountain by paying , tapping it, and untapping Kelpie Guide and Deathbloom Ritualist, causing you to draw a card
3. Resolve the Kelpie Guide ability, untapping Halo Fountain
4. Repeat

Results

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