For now we can search for colors: red, blue, green, purple and play cost such as: 1cost, 2 cost, blocker, trigger, counter, trigger & counter, banish, doubleattack … Connecting search will be "green & 8cost" or "blue & 9cost". Remember it has spaces between "&".

Search for counter: c1k (counter +1000), c2k (counter +2000) cards