I noticed the potential confusions in the original submission so I added a note there, but forgot to update here. The wishes come in order, from first to third, so if you were to only draw 2, you wouldn't get Scion's third wish. If the card died as a resoult of its own effect, you would first get the wishes and then procede to draw as a resoult of ending your turn.
Yes the card is a structure precisly because I didn't want it to get buffed, though you can still "cheat" the timer by playing Skor or Frostbone Naga. The original design had "can't move" in it's text because I forgot structures don't need that part of the text, so that is intentional as well. If your opponent attacks or otherwise damages the card, he simply speeds up the timer, which he may do precisly because he can make you discard some, if not all of the Wishes. Yes, you could play the card into opponents face to block his movement, but you can also take the safer approach and play it in the back, not to risk a dispell.
If the card would ultimately be a bit too weak, a simple buff would be changing it's name to Scion's Obelysk, as then, it could be a target for "Stone to Spears", which would make it that more interesting. I thought that would be too strong so for now i'll leave it the way it is. As Obelysk it would also summon a Derwish when "Whispers of the sands" is played.
Overall, regardless of contest, I would really like to see something alike actually be put in the game. Thank you for the response, cheers!