Another Round + Dockside Extortionist + Skullwinder

Another Round

Dockside Extortionist

Skullwinder

How it works

1. Cast Another Round by paying 2, blinking Dockside Extortionist and Skullwinder.
2. When Dockside Extortionist and Skullwinder enter the battlefield, they trigger.
3. Resolve the Dockside Extortionist trigger, creating at least three Treasure tokens.
4. Resolve the Skullwinder trigger, returning Another Round from your graveyard to your hand.
5. Activate three Treasure tokens by tapping and sacrificing them, adding 2.
6. Repeat.

This elegant loop relies on Dockside Extortionist generating enough Treasure tokens upon entering the battlefield to fully fund the mana cost of Another Round, provided your opponents control at least three artifacts and enchantments. With Another Round exiling and returning your creatures, Skullwinder hitches a ride to repeatedly pluck Another Round right back out of your graveyard and into your hand. Every single iteration leaves you with a growing horde of extra Treasure tokens while cycling your spells endlessly, though do keep an eye on Skullwinder's mandatory clause which gradually hands your opponent every single card back from their own graveyard as the engine runs.