Mana Gems

I made a few bigger changes to the way Mana, Refreshing and Locking is handled and I removed the turns. 

Instead you now have only the Mana Gems resource and the board space as a limiting factor. After placing a creature the draft is only refreshed once a mana gem is reduced to 0 value. If not you can continue to place creatures or manually refresh. It now costs 1 mana to refresh. Locking can be only used once per refresh but is free of cost.

This way you have way more "play space" when it comes to strategically use the mana gems. The way the current mana gem is reduced by placing a creatures is much more satisfying and you can pull off combos with the right order of creatures way easier. I also think that it is more fun to be able to refresh more often, which inherently has a slots-like quality where you never know if the next draft has the perfect creature you need.