Gwen Stacy

When Gwen Stacy enters, exile the top card of your library. You may play that card for as long as you control this creature.
{2}{U}{R}{W}: 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.

Gwen Stacy // Ghost-Spider

Marvel's Spider-Man

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.