by ipgyst
Here's a wording:Choose one of:
white + red = ranged fire attack 6
white + blue = ranged ice attack 6
green + red = siege fire attack 4
green + blue = siege ice attack 4
For each pair of the chosen crystals you sacrifice, you get the associated attack. Then convert all used crystals to mana.
Not perfect, but a heckuva lot easier than what's on the card now.