Partly updated for Enshrouded 1.0— 1.0: the unlock cost; the rest is pre-1.0 wiki data

Ice Resistance
Increases your Ice Resistance by 5% which reduces the amount of Ice damage received.
Where Ice Resistance sits on the 1.0 tree
In the Mage area. The cheapest way in from a starting point buys 5 nodes for 6 points, this one included (one rank each).
- 1Spirit1p
- 2Mage Apprentice1p
- 3Intelligence1p
- 4Iceman2p
- 5Ice Resistance1p
Builds that use Ice Resistance
2 preset builds tagged ICE_RESISTANCE — defining picks first, then ranked by tier (S → A → B).
- Ice Mage — Crowd ControlMage
Ice damage and slows: Iceman and Frost at full rank, Wizard and Chain Hit for crits that jump, Quick Charge for faster staff spells, Ice Resistance and Arcane Deflection for safety.
- Endgame MetaHybrid
Every one of the 212 points: two-handed Warrior (Barbarian's Path for the axe, Titan Edge for the greatsword, Slasher, Veteran, Relentless, Whirlwind Crescendo) in Heavy and Shiny Plates, Thunder and Wand Mastery for a shock wand, Blink, and the full Healer line. Pyromaniac is not on the 1.0 tree.
Related Mage skills
Same archetype — likely candidates to slot next to Ice Resistance in a build.
Arcane Deflection1pOn a successful parry, gain 20 mana.
Counterstrike1pThis magical attack can trigger other skills.
Eternal Spark1pValues in the 1.0 files: 15% per rank, 3 ranks.
Fire Resistance1pIncreases your Fire Resistance by 5% which reduces the amount of Fire damage received.
Healer1pValues in the 1.0 files: 15% per rank, 3 ranks.
Healing Revive1pValues in the 1.0 files: 8% per rank, 3 ranks.
Intelligence1pIncreases your Intelligence attribute by 1 Increases Magic damage by 5% per Attribute Point
Life Essences1pYour maximum health is increased fivehold by your intelligence attribute.
Sources: game files 1.0 + Keen Games 1.0 patch notes (changelog, combat changes) for the unlock cost; enshrouded.wiki.gg (pre-1.0) for the description and effects.