there are 16 plates hear are all the plates flame, zap, icicle,splash,meadow,fist,toxic, sky,insect,earth,mind,stone,spooky,dread,draco,and iron plate.
this is the same as Pokemon platinum, they are in the underground, they do take a while to find.
spell you trash 'platnium'=Platinum
you dig them up in the under ground mine
493
Give them to your Arceus, if you have one, or a Pokemon to boost a specific move's type, Or you can sell them for 500 each.
0216327sh189216128938812 32789327878231972138uyw 23981327777720201276771
200 POKEMON 200 POKEMON
110
490
There are 18 Fire Attacks in Pokemon Diamond, Pearl and Platinum.
493
110