Cool. I tinkered with some odd Mage at the release of Witchwood and it came up short, but it felt close. This is the kind of card that can work OK at 5 mana and beyond, but even just dropping it on curve is a decent play as it can act as a resilient soft taunt, kind of like Augmented Elekk.
In the old days, this card would have been crazy good. I mean, Mech Mage played Spider Tank. Just shows you how the game has changed.
Odd Mage is an interesting deck, not even that bad, and this makes it better. But with Mana Wyrm destroyed, it's hard to imagine just how good it can still be. Maybe after the rotation, things look a little different. Either way, along with Black Cat, this gives you another good reason to play the deck.
In just a regular Tempo Mage, I don't think this will make the cut.
The dream will be like "5 mana, 3/4, deal 1 damage and draw a card" but it's not that easy to have perfect ping without AOE or thing like that. And with Jaina, sometimes you doesn't want to get closer to fatigue, or you prefer Acolyte of Pain. So overall, I don't think this card will be played giving the current meta.