besides items the biggest reason for damage creep has been...
Keystones.
back in season 1-4 we didnt have random DPS boosts from things like thunderlords
we didnt have stuff like "press the attack"
all they new "runes" are just damage boosters. which is a cool mechanic i do really like its fun... however. at the same time. its breaking the game. i mean. getting 100/0 USED to mean you died in less than 2 seconds.. now it means u died in less than less than 0.5 seconds.. and keep in mind, 0.25 seconds is the average reaction to to visual stimuli this gives a player the remining .25 seconds (aka a QUARTER OF A SECOND), to react to burst.
this is absurd...
ONE ITEM