1. mystical item = above lvl 80
2. it randomly
3. check steam market lo.. some put gem inside to increase price

1) mostly those high rarity item you need use real moneh

2) no, all random chance, you can check the item where ever got drop from system or not
http://dota2.gamepedia.com/Cosmetic_Item

3) dota2 trade sub forum

Any trading or sales inquiries please use the thread below in the future

https://forum.lowyat.net/topic/3069360

Let me reply here since youve asked.

1. All items can be bought in dota2.com/store. Rarity is based on the indicator in your dota profile beside your exp bar. Its a colored eye-shaped thingy
2. No specific match for you to get drops easily. All depends on luck
3. You have to check in the Dota 2 community market, in the link ive sent above or trading thread in LYN forum, dota 2 lounge, or dota 2 store... You need to do research as price is not fix and it depends on supply and demand
Its for all players to achieve a win for every single hero in Dota 2 and you will achieve a trophy... Just a challenge for getting the trophy

no a most of my game lost was coz of 322...super lead dy dun wan push...all dive T3 T4 end up giving ppl end streak  then cumback~
bet at d2lounge~