Cadric, Soul Kindler, Gerrard, Weatherlight Hero, and Phyrexian Altar

Prerequisites

• Cadric, Soul Kindler on the battlefield
• Gerrard, Weatherlight Hero in hand or in the command zone
• Phyrexian Altar on the battlefield
• plus enough mana to pay for commander tax, if applicable available

Steps

1. Cast Gerrard either from your hand or from the command zone by paying and commander tax, if applicable
2. Gerrard enters the battlefield, triggering Cadric, causing you to pay to create a token copy of Gerrard
3. Activate Phyrexian Altar by sacrificing the nontoken Gerrard, adding one mana of any color
4. Gerrard dies, triggering its ability
5. Holding priority, activate Phyrexian Altar by sacrificing the token Gerrard, adding one mana of any color
6. The token Gerrard dies, returning the nontoken Gerrard from your graveyard to the battlefield
7. Repeat from step 2
8. Resolve all Gerrard triggers, exiling it if it's in your graveyard and returning all artifacts and creatures that were put into your graveyard this turn to the battlefield

Results

• Infinite blinking
• Infinite colored mana
• Infinite copies of all legendary creatures you control except Cadric
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers