Drakon Tor, Darkness' Bane

Vigilance, Haste, Double Strike, Lifelink
Other creatures you control have vigilance, first strike, and gets +1/+1.
Whenever a creature you control attacks, exile
the top card of your library. Until you attack again, you may play those cards.
Whenever you cast a spell or play a land from exile, Drakon deals 4 damage to any target.