You control at least five lands, plus additional lands that do not have summoning sickness and can tap to produce at least ({1} magic symbol) ({U} magic symbol) .
Deadeye Navigator is paired with Beledros.
"Cleric" chosen with Arcane Adaptation.
Steps
Activate Ancestor's Prophet by tapping five lands you control, causing you to gain 10 life.
Activate any number of other lands you control by tapping them, adding at least ({1} magic symbol) ({U} magic symbol) .
Activate Beledros by paying 10 life, untapping all lands you control.
Activate Beledros by paying ({1} magic symbol) ({U} magic symbol) , blinking it.
When Beledros enters the battlefield, Deadeye Navigator's soulbond ability triggers, repairing it and Beledros.
Repeat.
If the additional lands can tap to produce at least ({2} magic symbol) ({U} magic symbol) , this combo nets infinite mana.