Agrus Kos, Eternal Soldier + The Jolly Balloon Man + Orthion, Hero of Lavabrink + Phyrexian Altar

Prerequisites

• You control at least four extra nonlegendary creatures.

Steps

1. 1Activate The Jolly Balloon Man by paying and tapping it, targeting Agrus Kos.
2. 2Agrus Kos triggers, causing you to pay to copy the Jolly Balloon Man ability targeting each other creature the ability can target.
3. 3Resolve all Jolly Balloon Man abilities, creating a token copy of each other creature you control that is a 1/1 Balloon with haste. As needed, put the oldest Agrus Kos and Orthion into your graveyard due to the legend rule.
4. 4Activate Phyrexian Altar four times by sacrificing four tokens except the Orthion or Agrus Kos tokens, adding .
5. 5Activate the Orthion token's first ability by paying and tapping it, targeting the Agrus Kos token.
6. 6Agrus Kos triggers, causing you to pay to copy the Orthion ability targeting each other creature the ability can target.
7. 7Resolve all Orthion abilities, creating a token copy of each other creature you control with haste. As needed, put the oldest Agrus Kos and Jolly Balloon Man into your graveyard due to the legend rule.
8. 8Activate Phyrexian Altar three times by sacrificing four tokens except the Orthion or Agrus Kos tokens, adding .
9. 9Repeat.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite creature tokens with haste
• Infinite death triggers