Just remember that "same/same wall" and "plus" values are not effected by "elemental" changes. So if a card lands on the wrong element and gets a -1, it's listed numbers still determine it's value where same, etc. are concerned.

As far as strategy, I don't play to take advantage of these rules. I just collect all of the GF and character cards when I can, and rely on their big numbers. If you have 9's and A's on open squares, your opponent (usually) can't take advantage of same. Plus is a little trickier, though.

My best advice is abolish rules where you can, and make sure you get rid of/ refine all the level 7 and lower cards when you can't abolish random (like when playing Ellone at the space station)...or whoever it is that uses every rule....