Invasion of Tolvada // The Broken Sky, Felidar Guardian, and Altar of Dementia

Prerequisites

• Invasion of Tolvada // The Broken Sky in hand
• Felidar Guardian in the graveyard
• Altar of Dementia on the battlefield
• available

Steps

1. Cast Invasion of Tolvada by paying
2. When Invasion of Tolvada enters the battlefield, it triggers, returning Felidar Guardian from your graveyard to the battlefield
3. When Felidar Guardian enters the battlefield, it triggers, targeting Invasion of Tolvada
4. Holding priority, activate Altar of Dementia by sacrificing Felidar Guardian, causing target player to mill cards equal to Felidar Guardian's power
5. Resolve the Felidar Guardian trigger, blinking Invasion of Tolvada
6. Repeat from step 2

Results

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