Collectible Card Game Headquarters

I get a crash about 1 in every 10 games or so. I usually can't remember why it happened and the savegame is corrupt so I can't report it but this one I think I can. There is not much in play too so it is strange. Next phase game crashes (exe stops working).

The problem is Rainbow Knights which is heavily bugged:
1- if you have mana to activate second ability-pump the game will crash when you select Rainbow Knights for activation.
2- If you don't have mana for second ability but only for first-gain first strike when you activate first strike Rainbow Knights gets Swampwalk instead probably at activation which remains for the whole game and on resolution will also gain shroud which lasts till eot.
3- Also it doesn't use the trick for legacies and will show the awful both abilities on same legacy card and title & the legacy doesn't show the pump result (when pump ability gets fixed) but the 0/0 one.

For reference ability text of Rainbow Knights:
When Rainbow Knights comes into play, it gains protection from a random color permanently.\n|1: First strike until end of turn.\n|W|W: +0/+0, +1/+0, or +2/+0 until end of turn, chosen at random.

All fixed in 855cc6d