Need help getting Eistor the Banisher

Hello, im a pretty new player to TT and the /TT subreddit. I'm currently at my 7th prestige and im having a hard time getting Eistor. Been stuck here since around my 3rd prestige. Tried evolving takeda but still not helping much.

My artifacts are as follow: Crafter's Elixer ( lv 6) Drunken Hammer ( lv3) Chest of Contentment ( lv5) World illuminator (lv5) Undead Aura(lv3)

any advice on what should i do / which artifacts to upgrade first to get Eistor or should i just keep grinding till i have enough gold to move on the wall.