on route 214 just behind two boulders which you can smash
That's not even a Pokemon... you must have been fooled by some image of a fake Pokemon. It sounds like Magmar, but there's no such Pokemon as a "Magmarizar."
There's no such item/pokemon. Do you mean Giratina?
give the item to a Pokemon and then trade that Pokemon.
At Seafoam islands. Use dowsing MCHN
On Route 13 from the Treasure Hunter with a black coat.
The Pokeradar is an item that you get in Pokemon Platinum. You get it from Professor Oak after completing the Shinoh Pokedex.
There is no item or Pokemon called an anplogionin in Pokemon Platinum.
Lightball
in rout 228
When looking at the item, it does say "a Pokemon loves this item". It is a hint to give a Pokemon that item. Well that Pokemon is a rhydon. Give a rhydon that item to hold. Trade it and see what happens...
unfortunately you can't.
x speed