Satsuki, the Living Lore, There and Back Again, Hex Parasite, and Umbral Mantle

Prerequisites

• Satsuki, the Living Lore on the battlefield
• There and Back Again on the battlefield
• Hex Parasite on the battlefield
• Umbral Mantle on the battlefield
• There and Back Again has exactly two lore counters on it
• Umbral Mantle attached to Satsuki
• Satsuki does not have summoning sickness
• , plus an additional available if you do not control a Smaug token available

Steps

1. Activate Satsuki by tapping it, putting a lore counter on There and Back Again
2. There and Back Again's third chapter ability triggers
3. Holding priority, activate Hex Parasite by paying , removing a lore counter from There and Back Again and giving Hex Parasite +1/+0 until end of turn
4. Resolve the There and Back Again ability, creating a legendary 6/6 Smaug creature token
5. If you control two Smaugs, put one into your graveyard due to the legend rule
6. If you do, the Smaug that died triggers, creating fourteen Treasure tokens
7. If you made Treasures this way, activate five Treasures by tapping and sacrificing them, adding
8. Activate Satsuki by paying and untapping it, giving it +2/+2 until end of turn
9. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large Satsuki until end of turn
• Infinitely powerful Hex Parasite until end of turn
• Infinite Treasure tokens
• Infinite untap of nontoken creatures you control
• Infinite mana nontoken creatures you control can produce
• Infinitely large nontoken creatures you control