- Added remove/add counters as a cost, patch by Salmelo, thanks man!. See primitives/mtg.txt -> Thallid to see how it works
- added test for i286 by salmelo
- added basic display for counters (this needs improvement) by salmelo
- Added Dr Solomat's TEMPEST expansion
- Added Sacrifice as part of the cost of activated abilities. Making it work as an extra cost for "put in play" still requires some work though. "Render" methods need to be written correctly
- Added cards with sacrifice in the existing sets. Most of them need testing...