Ganodrof, Grixis eliminator

Flying, Flash, Deathtouch.
When Ganodrof, Grixis eliminator enters the battlefield, counter target spell, its controller
loses life equal to that spells converted mana cost.
{2}{u/b}: Counter target spell unless its controller
pays {2} for each card in each graveyard.
{4}{b/r}: Target player loses 5 life.