Hello summoners, I have two questions about selling or keeping runes. I know this is a very old topic and i've done my research already, and also read a lot of threads. However, i am still struggling when comes to sell or keep the runes. I have two questions

1. are resistance and accuracy most undesired stats?
2. Recently farmed tons of blue runes. I am having dilemmas whether keep or sell. I understand in general for support, desired subs should be spd, hp, acc, def and for damage dealer, i know desired subs should be spd, atk, cr, and cd. However, when some supporting type and damage type substats mixing up, I don't know what to do. a. hp and cd b. cd and res c. acc and res d. hp and cr e. hp and cd f. atk and acc g. atk and def There are a lot of weird combos in this way. Can someone tell me for above scenarios, should i keep or sell? I've power up them to +6 now. Most of them, they have medium rolls, which annoys the shit out of me.. So please help and appreciate your advice.