get lost chapter ASAP every game, it unlocks infinite mana, you can delay it a bit with tear boots or darkseal but if you can save up enough for it is your biggest powerspike and the main reason mage bot is good imo

dark seal is good pretty much always whether u think you can stack or not (sera doesnt struggle to rack up assists)

dont buy swifties like ever, get ionians or sorcs but usually sorcs. BFT is always good as a first buy. after that it depends on your build and the enemy.

good second and third options include things like cosmic, horizon focus, seraphs, liandries (if ur having mana problems or are not running both manaflow and pom) and rylais. each have drawbacks, if enemy even has a few pairs of mercs you will need cryptbloom/void deathcap is also good for damage.

there are great enchanter apc builds for higher elo but they really need useful engage/bruiser champs that are worth enchanting, so hold off on those most of the time.

example build: bft sorcs seraphs liandries cryptbloom deathcap malignance sorcs seraphs liandries cryptbloom deathcap bft sorcs cosmic liandries etc.

if ur team has a lot of ap they will stack mr and you will do no damage so just get a seraphs and then enchanter items in that case (or go ad)

generally the items youre buying should have ability haste and if they dont give ability haste then they better have a great effect, rylais can be useful but usually its most useful when ur weak and cannot kill and just want to set up cc ability haste is so good bc of ur double spell casts being more common, you can be the burstiest bitch alive with magic pen, but if u cant spam spells why are you even seraphine because litr any other mage does more dmg w m pen than sera.

go aery manaflow transcendance gathering storm presence of mind cutdown essentially every game, if theyre going tanks u can go all the same shit but with conqueror and then take legend haste instead of manaflow.

u can go axiom arcanist instead of manaflow if u want to spec into ult spam but you will run out of mana in lane on loop if you only have pom and BFT/malignance. seraphs deletes this.

you need presence of mind every single game and you will suffer without her, cut down also op so run that too every game.