If I Fork a Fire/Ice (or any other one of those double-colour cards), can I choose which half of the card to use for the Fork? (i.e. if my opponent tries to tap something of mine, can I Fork the Fire/Ice and do 2 damage to him?) Thanks,
As long as a split card is on the stack, only one half of it "shows". You can't Pyroblast a Fire/Ice if only Fire is on the stack. So no, you can't Fork it and change the half.
cool, thanks a lot.