Should my runepage be full ad or have some resistances.

Resistances. Live longer, do more damage ESPECIALLY scaling magic resist runes

This is coming from a dude who was all like "OOOh go all damage crit and lifesteal that's all you need" back in the day. Now I know that Mercurial Scimitar is How You Survive This Game

tbh i dont change my runes to fit meta simplly bcuz a basic rune page works for just about everything. it isnt even that situational anymore

just go with ad reds, armor/scaling health yellows, and cdr/MR blues, and (depending on what you play) more ad quints or armor pen quints

what are you playing vs what match up