With 0.36 HP, spell costs and damage was increased. However, items were NOT updated. The new item group effects already give relative bonuses, but the default gear effects still add a constant value.
All items, that increase mana, armor, resistance or hp should give a relative effect. +10 armor per effect is useless when your opponent does 2000 damage per hit. Also +5 mana (staff of the savior) is really useless when all of your spells have costs of 100+.
Please update these items to recover X% of the total value.