Spell mage isn't in a good spot in standard right now, it's a t3-t4 deck.
Reno is worth it if you play highlander mage. Atm it's not one of the best deck in the ladder, it's in the bottom t2 spot, and it's hard countered by Demon Hunter and Hunters. Also it's too expensive, you need tons of legendaries.
In order to win with spell mage you constantly go face and protect the board while doing it because you run out of resource pretty fast and cannot find a win condition. If your opponent heals themselves too much you are done for.
Don't you ask about Spell Mage like every three days? I am not here often, so if I remembered your nick solely for the fact you keep making new threads about Spell Mage, then you really had to make a few.