underworld cobra

first strike
trample
{x}:target cobra gains +X/+X or -X/-X {b}:summon any card from your graveyard. if it's a creature add +2/+2 to it's original power and toughness. this card gains +1/+1 for every card in graveyards and +2/+2 for black creatures. you may sacrifice {b}{b}{b} instead of paying casting cost.