Droart the Solar Knight

Hates, Reach
When Droart the Knight enters the battlefield, all Creatures under
your control gain haste and +2/+0 until
end of turn
{r}{r}{b}{x}, {t} all opponents creatures take X
amount of damage (X being equal to the amount spent)
{r}, Target creature gains +2/+1
{b}, Sacrifice target creature, gain +X/+X (X being equal to the Power/Toughness)