Illuna, Apex of Wishes

This spell can't be countered.
{x}{x}{u}: Scry {x}.
{u}{u}: Copy target instant or sorcery spell, then counter target spell. You may choose new targets
for the copy.
{u}{r}: Illuna, Apex of Wishes gains hexproof
until end of turn.
{x}{x}{u}{u}{r}{r}: Flip {x} coins. Take an extra turn
after this one for each coin that comes up heads.