Quickling

Flash (You may cast this spell any time you could cast an instant.)\r
Flying\r
When Quickling enters the battlefield, sacrifice it unless you return another creature you control to its owner's hand.

Flash (You may cast this spell any time you could cast an instant.)
Flying
When this creature enters, sacrifice it unless you return another creature you control to its owner's hand.

Wilds of Eldraine Commander

Flash
Flying
When Quickling enters the battlefield, sacrifice it unless you return another creature you control to its owner's hand.