Knights' Charge, Cavalier of Dawn, and Phyrexian Altar

Prerequisites

• Knights' Charge in the graveyard
• Cavalier of Dawn on the battlefield
• Phyrexian Altar on the battlefield
• undefined minus for each nontoken Knight you control available

Steps

1. Activate Phyrexian Altar by sacrificing each Knight you control, adding for each Knight
2. When you sacrifice Cavalier of Dawn, its second ability triggers, returning Knights' Charge from your graveyard to your hand
3. Cast Knights' Charge by paying
4. Activate Knights' Charge by paying and sacrificing it, returning all Knights from your graveyard to the battlefield
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite recursion of Knights you control