* Scourglass - Added mising sacrifice source cost.
* Grindstone - Infinite loop (with e.g. two Progenitus) is handled as a draw.
* Added Aquamorph Entity , fixed Primal Plasma and Primal Clay that can now be correctly copied (e.g. by Clone).
* Added early event type check for replacement effects to speed up game execution (not all effects already implement the new check).