Jegantha, the Wellspring + Horde of Notions + Temur Ascendancy + Goblin Bombardment

Jegantha, the Wellspring

Horde of Notions

Temur Ascendancy

Goblin Bombardment

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Goblin Bombardment by sacrificing Jegantha.
3. Activate Horde of Notions by paying , causing you to cast Jegantha from your graveyard without paying its mana cost.
4. When Jegantha enters, Temur Ascendancy triggers, allowing you to draw a card.
5. Repeat.

This fascinating recursive loop uses Jegantha, the Wellspring as both its own mana source and its own recurring sacrifice target, since tapping Jegantha for {W}{U}{B}{R}{G} provides the exact colored mana needed to activate Horde of Notions. By sacrificing Jegantha to Goblin Bombardment, you send it straight to the graveyard so Horde of Notions can immediately pull it right back to the battlefield without paying its mana cost. Every time Jegantha returns, Temur Ascendancy ensures you draw a card off the entry while giving Jegantha haste (though it enters ready to tap anyway), letting you continually burn out the table with the Bombardment's sacrifice damage.