At the beginning of your end step, put a +1/+1 counter on target creature you control.
Then if that creature has power 7 or greater, this creature becomes prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)
Channel GG
Sorcery
Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add C.
NM-Mint - $1.30
Lightly Played - $1.20
Moderately Played - $1.00
Heavily Played - $0.90
Damaged - $0.70
NM-Mint Non English - $1.30
Lightly Played Non English - $1.20
Moderately Played Non English - $1.00
Heavily Played Non English - $0.90
Damaged Non English - $0.70