Philosopher stone?

They start on floor 11 but are much more common 13+.

For whatever reason the Damascus Fort's seem to spawn alot more often on the thirteenth floor than anywhere else. Go try there first.

If you cannot seem to get one to drop the stone, try giving Myria's Steal ability a shot. If you synth a Slayer's Bangle with another 3 Slayer's Banglesand equip it she pretty much always steals an item. If its not the stone, backhand the stupid ho across the face for not giving you the right item and try again.

That's funny, you have gone down 10 lvls and haven't seen those enemies yet. So what does that tell you? Obviously you need to go further. Damascus forts show up more often after lvl 13 and pretty much stop showing up at lvl 18, but at lvl 18+ you start running into the grim reapers and I honestly think they drop the stones more often than the damascus forts, but thats just an opinion not neccessarily a fact.

if you opt not to try the stealing method. Then ambush any group of enemies above the 11th floor (although i found them more frequently above 14th) and take advantage of Myurias Demonolgy drop.

I have been playing around in wandering dungeon like 30 hours, and I never pass to lv10 wandering dungeon, can I ask 3 question that:
1 - how to check lv of wandering dragon , is that a memories plate in the calnus?
2- after I defeat the boss ( the same with the boss in Aeos, I forgot the name:(sorry) in wandering dragon, he ask few rediculus question that I have randomly answer him, is that answer effect to my characters?
3- I tried to fine philosopher stone and some people said it only drop after lv 13 but if my counting was right, I have passed over 30 floor and each floor I have killed all the enermy to find the Damascus fork but I never seen him, and I have been kiledthe boss like I said in question 2 above 2 time after I killed him, I saved, then after that , I went to the calnus and check the memories plate, it wrote that the wandering dungeon floor clear still only..... 10. What wrong with that when I have been clear it like 30 floor already. Any1 help :(

Each time you get out of the wandering dungeon, you will be sent to the first floor the next time you reenter.

So, to pass floor 10 you have to do 11 floors without exiting the wandering dungeon. the worst part is when you have too beat the ethereal queen. It will take smth like 5 hours to reach floor 20(where she is) & if you are beaten you loose eevery progress made in those 5 hours. You don't have any other option than don't dying for 20 consecutive floors, since you can't save without being returned to the first floor.