Peregrine Drake | Elesh Norn, Mother of Machines

Cards

You control up to five lands that can collectively tap to produce at least ({4} magic symbol) ({U} magic symbol) .

Activate up to five lands by tapping them, adding at least ({4} magic symbol) ({U} magic symbol) .
Cast
Peregrine Drake by paying its mana cost.
When
Peregrine Drake enters, it triggers twice. Resolve the first trigger, untapping five lands.
Holding priority, activate up to five lands by tapping them, adding at least ({4} magic symbol) ({U} magic symbol) .
Resolve the second
Peregrine Drake trigger, untapping five lands.
Cast
Ancestral Statue by paying its mana cost.
When
Ancestral Statue enters, it triggers twice, returning it and
Peregrine Drake from the battlefield to your hand.
Repeat.

This combo has been estimated to be Exhibition (Bracket 1+).