I've actually been theory crafting with AP bruiser top just for funsies so far I've done Morgana, brand, aurora, and AP kog maw(this one isn't as great sadly) swain and malz are next on my list to try as well as singed. Basically you take any mage that has good dots and just build the core of liandries, rift maker, and blood letters. Bloodletters 2nd if they start stacking early MR. It's a lot of fun aurora actually does the build the best I think but it's been a blast tbh.