| Chess Pwn |
well there's spiritual weapon and other spells that let you temporarily create a weapon, and a lot of the oracle mysteries let's you get an object from no where. Just say it's "painting" and boom
from ancestry mystery:
Ancestral Weapon (Su): You can summon a simple or martial weapon from your family’s history that is appropriate for your current size. You are considered proficient with this weapon. At 3rd level, the weapon is considered masterwork. At 7th level, 15th level, and 19th level, the weapon gains a cumulative +1 enhancement bonus. At 11th level, the weapon gains the ghost touch weapon property. You can use this ability for a number of minutes per day equal to your oracle level. This duration does not need to be consecutive, but it must be used in 1-minute increments. The weapon disappears after 1 round if it leaves your grasp.
| Chess Pwn |
These sounds like it might help with your plans. Call it while you're "painting" and then use Transformative to change it up. But if this is for a NPC then do what you want. The how doesn't matter as long as the difficulty is right. If this is for a home game character, then again, talk with DM and see if he feels what you doing is too strong. Because summoning from the air and drawing a weapon normally don't have to be mechanically different. Also I'm not sure why you want lots of different weapons, unless there's DR they all work basically the same.