Darksteel Citadel + Ensoul Artifact + Prototype Portal + Retreat to Coralhelm

U identity

Commander legal

The 4 combo pieces

• Darksteel Citadel
• Ensoul Artifact
• Prototype Portal
• Retreat to Coralhelm

What must be in place

Ensoul Artifact attached to Prototype Portal.
Prototype Portal does not have summoning sickness.

How to execute it

1. Activate Prototype Portal by tapping it, creating a token copy of Darksteel Citadel.
2. When the Darksteel Citadel token enters the battlefield, Retreat to Coralhelm triggers, untapping Prototype Portal.
3. Repeat.

What the combo produces

• Infinite colored mana
• Infinite colorless mana
• Infinite copies of a specific land
• Infinite Forest tokens
• Infinite Island tokens
• Infinite landfall triggers
• Infinite Mountain tokens
• Infinite Plains tokens
• Infinite Swamp tokens