Satsuki, the Living Lore + There and Back Again + Hex Parasite + Staff of Domination
Satsuki, the Living Lore
There and Back Again
Hex Parasite
Staff of Domination
Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite artifact tokensInfinite card drawInfinite colored manaInfinite death triggersInfinite draw triggersInfinite creature ETBInfinite lifegainInfinite lifegain triggersInfinite creature LTBInfinitely powerful creature until end of turnInfinite mana creatures you control can produceInfinite Treasure tokensInfinite untap of creatures you control
How it works
Activate Satsuki by tapping it, putting a lore counter on There and Back Again.
There and Back Again's third chapter ability triggers.
Holding priority, activate Hex Parasite by paying 1B/P, removing a lore counter from There and Back Again and giving Hex Parasite +1/+0 until end of turn.
Resolve the There and Back Again ability, creating a legendary 6/6 Smaug creature token.
If you control two Smaugs, put one into your graveyard due to the legend rule.
If you do, the Smaug that died triggers, creating fourteen Treasure tokens.
If you made Treasures this way, activate six Treasures by tapping and sacrificing them, adding 5.
Activate Staff of Domination's third ability by paying 3 and tapping it, untapping Satsuki.
Activate Staff of Domination's first ability by paying 1, untapping it.
Repeat.
Once you have infinite mana, you may use it to activate Staff of Domination's other abilities.