Since you are discarding for her ability already, you'll have fuel for the Zombie token making
You can get a raw copy for about $360
This is a deck that ran cards like Llanowar Elves, Blastoderm, Birds of Paradise, Saproling Burst, my #2 below, and even a copy of Rith, the Awakener
The only proxy allowed in sanctioned play is typically a judge-issued proxy for a narrow set of situations (like a card becoming damaged during the event)
First printed way back in Torment from 2002, Cabal Coffers has been around for over 22 years at this point
Darkness Energy (Pokemon Japanese Gold, Silver, New World | Pokemon Cards) prices are based on the historic sales