I am pondering creating an epic-level wizard character, who through excessive use of Mordenkainen's Disjunction on artifacts has permanently lost all casting ability as well as all his class levels and drawn the ire of at least one god.
So now he has to start over from scratch with a non-casting class, but he likes to continue pretending to be the big-shot wizard he was, and occasionally even forgets he has lost anything at all.
"You fools shall feel the power of my fireball!"
- nothing happens -
"Oh, right, forgot about that..." - take out wand of fireball; use magic device
"Now, feel the power of my fireball!"
To be clear, this character has probably no hope of permanently fooling anyone but the most hapless rubes. The idea is not that he is a con artist, just that he got a little unhinged after his loss of power, and has his own ways of coping (mostly denial and rejection of reality).
I was thinking I need a rogue with high ranks in use magic device and a lot of wands and scrolls, with a pimped-out pet rat as his ex-familiar. But I am a little fuzzy on the details.
For example, can he bluff someone into being charmed, and what other options does he have to fake high-level spellcasting powers? He also need some sort of half-believable excuse for whenever his magic fails to materialize at all.
Which feats and items do I need to make this concept viable so that he can keep up with the rest of the party? (I would like to limit this to mostly core, perhaps with a sprinkling of extras, but nothing too obscure)
Is this even feasible with the costs of scrolls and wands at low levels?
Are there better ways to accomplish this concept instead of a rogue with use-magic-device?