Neyali, Suns' Vanguard 
Legendary Creature — Human Rebel
Attacking tokens you control have double strike. Whenever one or more tokens you control attack a player, exile the top card of your library. During any turn you attacked with a token, you may play that card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL