Displace + Great Whale + Scrivener

Displace

Great Whale

Scrivener

How it works

1. Activate up to seven lands by tapping them, adding at least 2.
2. Cast Displace by paying 2, blinking Scrivener and Great Whale
3. When Scrivener and Great Whale enter the battlefield, their abilities trigger.
4. Resolve the Scrivener trigger, returning Displace from your graveyard to your hand.
5. Resolve the Great Whale trigger, untapping up to seven lands.
6. Repeat.

This elegant loop centers on Displace, using it to blink both Great Whale and Scrivener simultaneously for a net gain in mana and card advantage. Each time the spell resolves, Great Whale's entry trigger untaps your lands to pay for the next iteration, while Scrivener's entry trigger dips back into your graveyard to retrieve Displace. Because Displace targets two creatures at once, a single casting is all it takes to keep this engine running indefinitely, generating infinite mana and endless enter-the-battlefield triggers.