Frantic Search + Underworld Breach + Bonus Round Combo

Underworld Breach on the battlefield.

Frantic Search and Bonus Round in hand or in your graveyard.

You have an additional six cards in your graveyard if both Bonus Round and Frantic Search are in your graveyard, or you have an additional three cards in your graveyard if either card is in your graveyard. You control up to three lands that can tap to produce at least .

at most available

Cast Bonus Round either from your hand by paying or from your graveyard for its escape cost by paying 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.

Activate up to three lands by tapping them, adding at least .

Cast Frantic Search either from your hand by paying , or from your graveyard for its escape cost by paying and exiling three other cards from your graveyard.

Bonus Round triggers, copying Frantic Search.

Resolve the copy of Frantic Search, causing you to loot twice and untap up to three lands.

Holding priority, activate up to three lands by tapping them, adding at least .

Resolve the original Frantic Search, causing you to loot twice and untap up to three lands.

Repeat from step 2.

Infinite draw triggers

Infinite looting

Infinite self-discard triggers

Significant magecraft triggers

Significant mana lands you control can produce

Significant untap of lands you control