Items which previously applied your block chance to spells have all been updated to the new "chance to Block Spell Damage". Existing versions of these uniques will have different values to new versions and CANNOT be updated with a Lua error: Error: invalid field alias "items._pageName"; aliases cannot contain dots or quotes...
Existing versions of Rainbowstride now have +6-7% chance to Block Spell Damage. New versions have +4-6%.
Elemental Resist has been increased from 8% to 20%. Maximum Mana has been reduced from 80-100 to 40-60. Increased Energy Shield has been reduced from 150-200 to 140-180.