can be useful -
https://www.reddit.com/search?q=title:updated_new_dota_2_giveaway_for_5000_active+selftext:all&sort=new

Dear player! Congratulations ! You won free giveaway DRAGONCLAW HOOK or in return you can choose another Dota 2 items. Get it on {LIEN SUPPRIMÉ}EmpireDota2.com use your code: >S78SA<- (This code can only use this Account)

嗨！我想为你们所有人Dota 2至宝武器交易我的尊享剑心之遗Dota 2至宝武器。如果您同意请发送给我蒸汽交易报价。交易URL在我的个人资料中
(Hey I want to trade my Exalted Bladeform Legacy Juggernaut Arcana for all your Data 2 loading screens. Send me offer if you agree - trade url in my profile)

I trade my pudge arcana for any 10 Dota2 loading screens - if you want send me trade offer, I will accept

Hi, I can give my Fractal Horns of Inner Abysm arcana for all of your dota 2 loading screens (Im collecting them) so if it's ok for you send me trade offer please. Link in my bio

guy in my profile made giveaway for everyone but only 1 skin for 1 account. He gave me arcana for free lol