Spinneret and Spiderling 
Legendary Creature — Spider Human Hero
Whenever you attack with two or more Spiders, put a +1/+1 counter on Spinneret and Spiderling. Whenever Spinneret and Spiderling deals 4 or more damage, exile the top card of your library. Until the end of your next turn, you may play that card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL