Warp Drake

Flying
When Warp Drake enters the battlefield,
exchange control of Warp Drake and up to one
target creature an opponent controls. If you
don't or can't make an exchange, sacrifice Warp
Drake. This ability still resolves if its target
becomes illegal.
That player shuffles their library, then reveals
the top card of their library. If it's a permanent
card, they put it onto the battlefield.