Beledros Witherbloom + Ancestor's Prophet + Deadeye Navigator + Living Plane + Arcane Adaptation

Beledros Witherbloom

Ancestor's Prophet

Deadeye Navigator

Living Plane

Arcane Adaptation

How it works

1. Activate Ancestor's Prophet by tapping five lands you control, causing you to gain 10 life.
2. Activate any number of other lands you control by tapping them, adding at least 1.
3. Activate Beledros by paying 10 life, untapping all lands you control.
4. Activate Beledros by paying 1, blinking it.
5. When Beledros enters the battlefield, Deadeye Navigator's soulbond ability triggers, repairing it and Beledros.
6. Repeat.
7. If the additional lands can tap to produce at least 2, this combo nets infinite mana.

This loop turns your entire land base into a self-sustaining engine of life and mana by leveraging Living Plane to transform every land into a 1/1 creature, which Arcane Adaptation then weaves into the Cleric creature type to satisfy Ancestor's Prophet's tapping requirement. With those pieces in place, Ancestor's Prophet lets you cash in those land-creatures for a 10-life buffer that completely offsets the 10 life you must pay into Beledros Witherbloom's active ability to untap your entire board. Finally, Deadeye Navigator pairs with Beledros Witherbloom to provide a cheap blink safety valve that resets the dragon's once-per-turn restriction every cycle, letting you infinitely untap your lands and net boundless mana.