Parallax Wave, Leonin Relic-Warder, Reveillark, and Altar of Dementia

Prerequisites

• Parallax Wave on the battlefield
• Leonin Relic-Warder in the graveyard
• Reveillark on the battlefield
• Altar of Dementia on the battlefield
• Parallax Wave has at least one fade counter on it

Steps

1. Activate Parallax Wave by removing a fade counter from it, exiling Reveillark
2. When Reveillark leaves the battlefield, it triggers, returning Leonin Relic-Warder from your graveyard to the battlefield
3. When Leonin Relic-Warder enters the battlefield, its first ability triggers, exiling Parallax Wave
4. When Parallax Wave leaves the battlefield, it triggers
5. Holding priority, activate Altar of Dementia by sacrificing Leonin Relic-Warder
6. When Leonin Relic-Warder leaves the battlefield, its second ability triggers, returning Parallax Wave from exile to the battlefield
7. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Leonin Relic-Warder's power
8. Resolve the Parallax Wave trigger from step 4, returning Reveillark from exile to the battlefield
9. Repeat

Results

• Infinite blinking
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill