User blog comment:KaiserLos24/Champions for Pre-30 Summoners/@comment-11059100-20140312094726

Runes' impact is massive in the first minutes: just think about having like 15 extra AD... More dmg every AAs, more dmg on skills and you can probably win almost every trade. And this is just without thinking about armor/mr bonus.

Masteries are almost as important as runes, cause could give you a small advantage in the early (usually the first points in a tree) or helping in mid game/all game (normally the last ones).

For beginners is usually suggest to master a hypercarry. After lvl 30, these champs are not so played cause of one good-time cc can destroy them. Champs like Katarina, Fiora, Gangplanck, Yasuo (i. e. but there are some others) could deal a tons of damage AoE and could let you carry the game if you were not focused.