Composite Golem + Mikaeus, the Unhallowed + Retribution of the Ancients

WUBRG identity

Commander legal

The 3 combo pieces

• Composite Golem
• Mikaeus, the Unhallowed
• Retribution of the Ancients

What must be in place

Composite Golem does not have a +1/+1 counter on it.

How to execute it

1. Activate Composite Golem by sacrificing it, adding {W}{U}{B}{R}{G}.
2. Composite Golem dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Activate Retribution of the Ancients by paying {B} and removing the +1/+1 counter from Composite Golem, targeting any creature.
4. Repeat.

What the combo produces

• Infinite blue mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite green mana
• Infinite red mana
• Infinite sacrifice triggers
• Infinite white mana
• Reduce the toughness of creatures opponents control to 0