Satoru Umezawa | Peregrine Drake | Mistblade Shinobi

Cards

Mistblade Shinobi does not have summoning sickness and cannot be blocked by an opponent.
You control up to five lands that can tap to produce at least ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) ({B} magic symbol) .

Declare
Mistblade Shinobi as an attacker.
When it isn't blocked, activate up to five lands you control by tapping them, adding at least ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) ({B} magic symbol) .
Activate
Peregrine Drake's ninjutsu ability by paying ({2} magic symbol) ({U} magic symbol) ({B} magic symbol) and returning
Mistblade Shinobi from the battlefield to your hand, putting
Peregrine Drake onto the battlefield from your hand tapped and attacking.
When
Peregrine Drake enters the battlefield, it triggers, untapping up to five lands.
Activate
Mistblade Shinobi's ninjutsu ability by paying ({U} magic symbol) and returning
Peregrine Drake from the battlefield to your hand, putting
Mistblade Shinobi onto the battlefield from your hand tapped and attacking.
Repeat from step 2.
If you control up to five lands that can tap to produce at least ({3} magic symbol) ({U} magic symbol) ({U} magic symbol) ({B} magic symbol) , this combo nets infinite mana.