PSA: Learn the cheapest build you can possibly run effectively on your champ, use when behind

Look if you've been 3 man ganked twice and they just somehow get you under tower then maybe you don't want the most expensive core build items

find an alternative build, make it work, try to cut as much gold as you can out of it

maybe you're gp and you were gonna go critplank but you've been camped all game and your mid is also kinda losing hard

Don't expect to get an IE and a triforce any time soon, so find something new that works

it'll make you way more useful, if you're not gonna carry then please don't build carry, build to help your team as effectively as you can for what gold you have

Are you getting rek'd by an enemy vlad and the enemy mid is a swain? Well then... get mortal reminder instead of lord doms (Heresy i know)

META means most effective tactics available

if your core build isn't available then it isn't meta