"I am a salty triggered 12-year old that can't think of any way to counter a specific deck because I have limited playing ability and can't bother to add like 2 cards to my deck to counter an already easily countered deck"
Seriously, how on earth do you lose to secret mage so much that you want to make a 5-word forum post about nerfing it? You know what, I'll help you. Make Eater of Secrets, if you play Hunter then Flare. Use common sense and think "What secret could my opponent have played at this circumstance, if he didn't play it earlier?". I know it sounds like an insult, but this allows me to win games. Do I have an 8/8 Edwin VanCleef on turn 4? Then it's probably Vaporize, so attack with the smallest minion on board. Do I have lethal with Eviscerate face? Then, it's either Counterspell, Spellbender or Ice Block. Also, stop saying Ice Block will rotate out soon and stuff like that. The more you say it, the less likely it will happen. Besides, I only ever see Ice Block in very low ranks, like 18 to 20. Past that, it's replaced with Explosive Runes.
There, some medicine for your ache. Now stop whining and do something about it instead of complaining to some random dudes online.