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

Xorn
Black Market Tycoon
Umbral Mantle
Krark-Clan Ironworks

Requires
Xorn must be on the battlefield. Black Market Tycoon must be on the battlefield. Umbral Mantle must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Umbral Mantle attached to Black Market Tycoon. Black Market Tycoon does not have summoning sickness.
Steps
  1. Activate Black Market Tycoon by tapping it, creating two Treasure tokens.
  2. Activate Krark-Clan Ironworks by sacrificing both Treasure tokens, adding .
  3. Activate Black Market Tycoon by paying 3 and untapping it, giving itself +2/+2 until end of turn.
  4. Repeat.
Results
Infinite colored mana. Infinite colorless mana. Infinitely large Black Market Tycoon until end of turn. Infinite Treasure tokens.

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Creatures
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Instants
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