Black Market Tycoon + Krark-Clan Ironworks + Umbral Mantle + Xorn

RG identity

Commander legal

The 4 combo pieces

• Black Market Tycoon
• Krark-Clan Ironworks
• Umbral Mantle
• Xorn

What must be in place

Umbral Mantle attached to Black Market Tycoon.
Black Market Tycoon does not have summoning sickness.

How to execute it

1. Activate Black Market Tycoon by tapping it, creating two Treasure tokens.
2. Activate Krark-Clan Ironworks by sacrificing both Treasure tokens, adding {C}{C}{C}{C}.
3. Activate Black Market Tycoon by paying {3} and untapping it, giving itself +2/+2 until end of turn.
4. Repeat.

What the combo produces

• Infinite colored mana
• Infinite colorless mana
• Infinite Treasure tokens
• Infinite untap of creatures you control
• Infinitely large creature until end of turn