Use our OSRS Max Hit Calc for Magic to calculate what you hit. Figure out what you will hit with spells like Fire Surge or what the chance is that you will do damage.
We have run a lot of test in order to know how OSRS calcualtes the magic damage. This way you can now calculate what you will max hit
If you are looking for more calculators be sure to check out our OSRS Calculators.
The Staff of the dead gives a 15% boost to magic damage. There are various methods by which players can increase their potential maximum Magic damage. Temporarily increasing your Magic level only increases your accuracy, but not damage (with the exception of Magic Dart, salamanders and the trident of the seas/swamp).
The occult necklace is a magical amulet that requires 70 Magic to wear. ... Wearing it increases the player's Magic damage by 10%, and is the only amulet to give such a bonus.