Magic Damage

Various items in RuneScape allow spellcasters to increase the potential maximum lifepoints damage. The effect of worn items can be seen in the stats window in the Magic Damage Bonus percent, whereas boosts gained by potion-boosted levels can be calculated manually and added to the equipment bonus.

As far is known, all of these bonuses stack, as long as they can be worn/ used simultaneously. The Boosts are compounded so for example, a player wearing the arcane blast necklace and ancient staff which each boost 10% will have their max hit boosted by 21%.

Damage-boosting Equipment

 * The Hexcrest and Full slayer helmet's 15% damage boost only apply when casting spells against a currently assigned slayer monster.
 * Chaos gauntlets boost all bolt spells' max hit by 30.

Damage-boosting Potions

 * For every point that the player's magic level is boosted above their base level increases their damage boost by 3%.
 * Wizard's mind bomb will boost your magic level by 2 if your base level is under 50 of by 3 for levels 50 and over

Maximum hits
Currently, the highest percentage boost possible is 66%. Could someone with programming knowledge make a table with the base spell maxes (there's one in the magic article) and then apply the 66% to it and show each max?