This item is contained in the Smokywood Pastures Special Gift or the Stolen Present.Collect the weapon enchantment appearance of Flames of Ragnaros. It also can be listed on the Black Market Auction House.
Here you can buy Illusion: Flames of Ragnaros for EU or US Servers.
Also you'll get guide for receiving Illusion: Flames of Ragnaros
Illusion: Flames of Ragnaros
Additional budget for Character transfer or Character boost to max level. BMAH Services in Shadowlands now requirement to have a max level character on server, so Trial character will not work.
Free time on evening, if you choose selfplay option