When Gwen Stacy enters, exile the top card of your library. You may play that card for as long as you control this creature.
2URW: Transform Gwen Stacy. Activate only as a sorcery.
//
Ghost-Spider
Flying, vigilance, haste
Whenever you play a land from exile or cast a spell from exile, put a +1/+1 counter on Ghost-Spider.
Remove two counters from Ghost-Spider: Exile the top card of your library.
You may play that card this turn.
