Why the hell would anyone use the Candle of Invocation to make infinite wishes without a contingency plan? Just make safe wishes (Inherit bonuses, replicated casting, free item creation). Wishing for stupid things that would completely curb stomp the entire campaign.
Spoiler"I wish the BBEG was dead!"
"He is now dead-"
"Yay!"
"-and has become the Undead. Congratulations, now find his Phylactery"
"I wish I had his Phylactery!"
"You now have his Phylactery. It is in your bag of holding-"
"Yay!"
"It is a Sphere of Annihilation"