Flipping face down the same card you immediately return to hand after? Any quick play spell/trap can help you with that
BoM has synergy with every single deck out there just for the fact it disrupts things and is very versatile, it's not like it's only good in harpies or anything
Book of moon improves every single deck in the game, are you perhaps trying to make harpie lady look like a big spender only deck? Are you perhaps the evil eye guy?
Anoymous
