Peregrine Drake enter the battlefield, their abilities trigger.
Resolve the
Greenwarden of Murasa trigger, returning
Displace from your graveyard to your hand.
Resolve the
Peregrine Drake trigger, untapping up to five lands.
Repeat.
Notes
If you control five lands that can tap to produce at least ({3} magic symbol) ({U} magic symbol) , this combo nets infinite mana, and you may blink any other permanent besides