Mana Regen is capped at 18. Is there somewhere a calculator to figure out up to what spells (whether magery or other spellcasting abilities) one could cast a go-go (i.e. replenishing mana right away) when at the 18 MR cap ? Thanks. I also have a question about Spell Damage Increase (SDI). Does it only affect offensive spells (those which do damage...) or also "defensive" spells like, for example, Heal and Greater Heal or several Spellweaving or other casting abilities defensive spells ? That is, for example, having high SDI allows to heal more damage casting Greater Heal as compared to not having SDI ? If so, is there also a calculator which, depending on the SDI level, allows to calculate how much more points Greater Heal can heal ? Thanks.