Plus, you arent limited to taking it right there and thenyou can cast it whenever is most convenient, for free, even if the Spellsnatcher leaves play
You'll still need to keep those two mana available , though
An argument can be made for returning your board to hand if someone else wipes, but this also means your opponents now have access to their cards in hand again, a lot of those which will potentially have better and more impactful enter the battlefield (ETB) effects than your own
Edgar Markov is available for $2500-$3000 and I would expect this to settle in that range
So instead of using your burn to attack your opponent directly, instead use it to kill their deathtouch creatures
Amass and recruit your armies in the shadow of The Lonely Mountain, then battle it out to claim the treasures of Erebor