As awesome as this card is, I can't really see it being played. Even among Wild Legendary minions, there's simply too many bad ones. The card is too RNG to be relied upon. That won't stop the occasional Trolden video of getting a Kel'Thuzad pull at a crucial moment but overall, this card just won't see play.
This just makes me laugh at the poeple who were defending the "leaked" toki with the coins as being realistic. No, this is what you get.
It won't see "competitive" play, but people need to remember ranked mode isn't the only game mode. Casual mode is not "practice mode", it's meant to mess around with fun cards like this. But yet our stupid playerbase insists on playing tier 1 decks in casual because they are too scared to play in ranked.