Satsuki, the Living Lore + There and Back Again + Hex Parasite + Umbral Mantle
Satsuki, the Living Lore
There and Back Again
Hex Parasite
Umbral Mantle
Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite artifact tokensInfinite colored manaInfinite death triggersInfinite creature ETBInfinite creature LTBInfinitely large creature until end of turnInfinitely powerful creature until end of turnInfinite Treasure tokensInfinite untap of nontoken creatures you controlInfinite mana nontoken creatures you control can produceInfinite power and toughness for certain creaturesInfinite untap of creatures you controlInfinite mana creatures you control can produce
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 five Treasures by tapping and sacrificing them, adding 4.
Activate Satsuki by paying 3 and untapping it, giving it +2/+2 until end of turn.