Cumulous Rocks

Prowess (Whenever you cast a
noncreature spell, this creature
gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell,
you may pay {r/w}{r/w}.
If you do, target creature gains
double strike until end of turn.
—
(Replacer for Shu Yun, the Silent Tempest)