Kauyon, Servant to None

When you cast Kauyon, Servant to None, counter target spell.
Flash, flying
{x}{w}{u}{b}: All other creatures get -X/-X until
end of turn. Each player flips a coin. If he or she wins the flip, he or she draws X cards. Otherwise, he or she discards X cards.
"There are no strings on me, for I am free!"