Astel, Void Naturalborn

Flying, Trample, Haste, Double Strike, Hexproof
This spell cannot be countered.
Annihilator 6 (Whenever this creature attacks,
the opponent attacked sacrifices 6 permanents.)
{1}{w}, gain 5 health.
{1}{u}, create a token creature that's a copy of target creature you control.
{1}{b}, sacrifice {x} creatures, and then destroy {x} of your opponents creatures.
{1}{r}, deal 10 damage to any target.
{1}{g}, target creature you control gains +10/+10 and trample until end of turn.