Naru Meha, Master Wizard, Primevals' Glorious Rebirth, and Phyrexian Altar

Prerequisites

• Naru Meha, Master Wizard in hand
• Primevals' Glorious Rebirth in hand
• Phyrexian Altar on the battlefield
• You control at least one legendary planeswalker or creature
• available

Steps

1. Cast Primevals' Glorious Rebirth by paying
2. Holding priority, cast Naru Meha by paying
3. When Naru Meha enters the battlefield, it triggers, copying Primevals' Glorious Rebirth
4. Holding priority, activate Phyrexian Altar by sacrificing Naru Meha, adding one mana of any color
5. Resolve the copy of Primevals' Glorious Rebirth, returning all legendary permanent cards from your graveyard to the battlefield
6. Repeat from step 3

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers