Can potentially break the game and be a huge win condition.
However, because of Shuderwock Shaman, no slow control would be able to thrive, relegating this card at Midrange. Midrange Paladin has the tools to be absolutely broken, but lacks one very important thing, which is any card draw to find their win conditions and answers.
The card is powerful, can be meta-defining, or not see any play at all depending if Paladin gets draw and slows down, or is forced to stay aggro with Divine Favor.
Well I can ask Peter Wahlen again but he already confirmed that Val'anyr buff on a magnetic minion gets passed over via magnetic so why should that interaction be even possible if Val'anyr is not part of the "magnetic-buff" like you say?
in my understanding there is no "magnetic-buff" which is restricted to certain amount of stats or card-text. everything enchantet to the hand-card is part of the magnetic buff nad will get passed over to the mech-target. if I play a Val'anyr buffed Wargear as a minion wiothut the magnetic-"battlecry" I won't get the Val'anyr stats+ deathrattle back via Kangor's Endless Army but as soon as I transfer the stats+card text via magnetic it is part of an magnetic upgrade. I will ask Peter Wahlen about that interaction but I am pretty certain thats how the game is coded