Magic resistance (MR) is a defensive stat that reduces incoming magic damage by a percentage. This comprehensive guide explains how MR works and how to optimize it.

Magic Resist Formula The formula for calculating damage reduction from magic resistance is: Damage Reduction = Raw Damage × [100 / (100 + MR)]

For example:

• 25 MR = 20% damage reduction
• 100 MR = 50% damage reduction
• 200 MR = 66.6% damage reduction

Key Points About Magic Resistance:

• Each point of MR increases effective health against magic damage by 1%
• MR stacks additively
• Base MR ranges from 30-53 at level 1 to 52-75 at level 18 depending on champion
• Gold value is 20 gold per point of MR

Sources of Magic Resistance:

1. Items like Force of Nature, Hullbreaker, and Spirit Visage
2. Champion abilities (Leona's Eclipse, Garen's Courage, etc.)
3. Runes (Aftershock, Conditioning)
4. Neutral buffs like Mountain Drake

Optimizing Magic Resistance:

• Balance MR with health for maximum effectiveness
• The optimal ratio is approximately: Health = 6.75 × (MR + 100)
• Consider enemy damage types when choosing between health and MR
• Items providing both stats are most efficient

Factors Affecting MR Choice:

• Enemy team composition
• Presence of true damage
• Your champion's built-in defensive steroids
• Need for specific item effects
• Enemy magic penetration

Magic resistance provides crucial defense against magic damage, but should be balanced with health and other defensive stats for optimal survivability.

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