Frantic Search + Underworld Breach + Bonus Round

Frantic Search

Underworld Breach

Bonus Round

How it works

1. Cast Bonus Round either from your hand by paying 1 or from your graveyard for its escape cost by paying 1 and exiling three other cards from your graveyard, ensuring not to exile Frantic Search if its in your graveyard, causing any instant or sorcery cast this turn to be copied.
2. Activate up to three lands by tapping them, adding at least 1.
3. Cast Frantic Search either from your hand by paying 2, or from your graveyard for its escape cost by paying 2 and exiling three other cards from your graveyard.
4. Bonus Round triggers, copying Frantic Search.
5. Resolve the copy of Frantic Search, causing you to loot twice and untap up to three lands.
6. Holding priority, activate up to three lands by tapping them, adding at least 1.
7. Resolve the original Frantic Search, causing you to loot twice and untap up to three lands.
8. Repeat from step 2.

By casting Bonus Round, you supercharge your spells to replicate themselves over and over, creating a cascading storm of copies for every instant or sorcery you play. This sets the stage for Frantic Search, which feeds the engine by drawing cards, discarding resources to fill your graveyard, and untapping your lands to keep the mana flowing. Because Underworld Breach gives all your nonland graveyard cards escape, you can endlessly cast both Frantic Search and Bonus Round from your graveyard by exiling other spent spells, turning a single loop into an unstoppable chain of card-cycling and untap triggers.