no, you don't need dark pokemon for any dungeons, but here comes a list of stones and ribbons:
thunderstones are found on floor 29 of thunder field (raikou)
fire stone are found on floor 29 of fiery feild (entei)
water stones are found on floor 29 of northwind field (suicune)
sun ribbons are found on floor 20 of wyvern hill (key is required)
lunar ribbons are found on floor 20 of northwind field (key is required)
hope I helped!
if at first you don't suceed skydiving is not for you
the art of flying is to throw yourself at the ground and miss.
I see said the blind man to his deaf son.
he who pulls the sword out of the stone shall have it confiscated by the FBI
how do you keep an idiot busy? (look below)
how do you keep an idiot busy? (look above)