There and Back Again + Clockspinning Combo

There and Back Again on the battlefield (There and Back Again with exactly two lore counters on it on the battlefield).

Clockspinning in hand.

available

At the beginning of your precombat main phase, There and Back Again triggers, putting a lore counter on it and triggering its third chapter ability.

Holding priority, cast Clockspinning with buyback by paying , removing a lore counter from There and Back Again and returning Clockspinning to your hand.

Resolve the There and Back Again ability, creating a 6/6 Smaug legendary creature token.

Cast Clockspinning with buyback by paying , putting a lore counter from There and Back Again and returning Clockspinning to your hand.

There and Back Again's third chapter ability triggers. Holding priority, cast Clockspinning with buyback by paying , removing a lore counter from There and Back Again and returning Clockspinning to your hand.

Resolve the There and Back Again ability, creating a 6/6 Smaug legendary creature token.

Put either Smaug into your graveyard due to the legend rule. The Smaug that dies triggers, creating fourteen Treasure tokens.

Activate eight Treasure tokens by tapping and sacrificing them, adding .

Repeat from step 4.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite artifact tokens

Infinite creature LTB

Infinite creature ETB

Infinite colored mana

Infinite death triggers

Infinite storm count

Infinite magecraft triggers

Infinite Treasure tokens

Put all Mountains from your library onto the battlefield