Reduce Damage vs Elemental Shields

(from Aelius)

A change to the mechanics of reduce damage and elemental shields:

- Casting reduce damage on a player (or yourself) who already has an
elemental shield effect (with a spell as the origin) will no longer cancel
that effect. The reduce damage spell will fizzle out. The reverse is also
true: casting an elemental shield on someone with reduce damage (or on
someone with a shield of an opposing sphere) will cause the spell to fizzle,
rather than cancelling reduce damage.