Underworld Breach + Glimpse the Unthinkable + Lotus Petal

Underworld Breach

Glimpse the Unthinkable

Lotus Petal

How it works

1. Activate Lotus Petal by tapping and sacrificing it, adding U/B.
2. Cast Glimpse the Unthinkable from your graveyard for its escape cost by paying and exiling three other cards from your graveyard, causing you to mill ten cards.
3. Cast Lotus Petal from your graveyard for its escape cost by paying 0 and exiling three other cards from your graveyard.
4. Activate Lotus Petal by tapping and sacrificing it, adding U/B.
5. Repeat from step 3 one additional time.
6. Repeat from step 2.