Collectible Card Game Headquarters

I'm trying to implement fan made starcraft cards (the forum doesn't give me a right to leave a link, but you can google "mtg starcraft", it's a first link for me). I do it relying on existing MTG card implementations from Forge, and while Battlecruiser or Vulture are easy to make this way, there are many mechanics which I have no idea what to base on - for example, Protoss Shield X (This enters with X +1/+1 counters. Damage is dealt to this by first removing that many +1/+1 counters, with excess damage dealt as normal.) on most of their creature cards, or Terrans Switch X (You may cast this face down as a 2/2 creature for . Turn this face up or face down any time for its switch cost.)
Tell me please, are those mechanics currently possible in Forge, and if so, can you please show me an example?