Aatrox, the Darkin Blade

Haste, lifelink, first strike
{1}{b/r}: Attacking creatures get +1/+0 until
end of turn.
{2}{b}{r}, Pay X Life: Goad X creatures you
don't control. If X is 10 or more Aatrox
gains double strike until end of turn.
"Now, hear the silence of annihilation!"