Tradewind Rider | Intruder Alarm | Peregrine Drake

Cards

Peregrine Drake in hand.
Tradewind Rider and
Intruder Alarm on the battlefield (
Tradewind Rider without summoning sickness).

You control up to five lands that can 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 ({4} magic symbol) ({U} magic symbol) .
When
Peregrine Drake enters the battlefield, it and
Intruder Alarm trigger.
Resolve the
Peregrine Drake trigger, untapping up to five lands.
Resolve the
Intruder Alarm trigger, untapping all creatures.
Activate
Tradewind Rider by tapping it,
Peregrine Drake and one other creature you control, returning
Peregrine Drake from the battlefield to your hand.
Repeat.

If you control creature(s) that can tap to produce mana, you can use that mana to pay for the creature and instead gain mana from the creature's ETB ability.