Invasion of Tolvada // The Broken Sky, Felidar Guardian, and Ashnod's Altar

Prerequisites

• Invasion of Tolvada // The Broken Sky in hand
• Felidar Guardian in the graveyard
• Ashnod's Altar 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 Ashnod's Altar by sacrificing Felidar Guardian, adding
5. Resolve the Felidar Guardian trigger, blinking Invasion of Tolvada
6. Repeat from step 2

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers