Halo Fountain, Deathbloom Ritualist, and Tidewater Minion

Prerequisites

• Halo Fountain on the battlefield
• Deathbloom Ritualist on the battlefield
• Tidewater Minion on the battlefield

Steps

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

Results

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