MArcomage

Turns out to be very overpowered

On the contrary, I think it's cost is a little bit high :P
I have it in some of my decks and never managed to play it.

I think it can rarely do above 100-110 damage and this only in decks that build magic.

not really. 60 basic attack for 50 gems is not overpowered at all.

Shouldn't this discussion be in balance changes?

Anyways, like Lord Ornlu says, it's only powerful in a specific kind of deck, and only if you have enough to pay for its high gem cost. I don't think it's overpowered.

It's hard to say. The surest condition for playing it for high damage, increasing your own Magic substantially, also makes it easy to afford playing. Drawing it when your Magic is at its base value and not going to get any higher means that even if you do get enough gems, it's not going to be worth the cost. Having (or stealing) it when your opponent has increased his Magic makes this card very interesting.

It's impressive under the right conditions and underwhelming most other times. Sounds like a balanced Rare to me. Disappointing draw due to Dragon keyword in most cases, but must-have for decks boosting Magic.