I know you didn't say anything about ab spamming all you mentioned was wrong arcane rotation and i corrected you(with ab spam i was referring to other ppl) , and mage armor glyph is mandatory for any raiding arcane mage so there is nothing smart about that. And if you don't go below 90% of mana as arcane that means you are doing it wrong, mirror image is up for 30 sec and that is longest lasting cd you have that means you are in burn faze and burn faze is nothing but AB spam and 30 sec of ab spam gets you in bottom % of your mana pool. There is no need to be rude especially if you don't have knowledge about class you are talking about.