This skill becomes available when engraving an Uncut Skill Gem of level 14 or higher. The resulting skill uses the selected Uncut Skill Gem's level.
PoE2 skill gem
Cast on Critical
While active, gains Energy when you Critically Hit enemies and triggers socketed Spells on reaching maximum Energy.
Catalog version 0.5.4d
No direct 0.5 patch change is linked to this page. The displayed values are current for catalog version 0.5.4d.
Effects
10 effects- Mana: 100
- Gains 1 Energy per Power of enemies you\nCritically Hit with Skills, modified by the percentage of the enemy's Ailment Threshold the Critical Hit will deal
- Triggers all Socketed Spells and loses all Energy on reaching maximum Energy
- Socketed Skills deal 20% less Damage
- Has 10 maximum Energy per 0.1 seconds of base cast time of Socketed Spells
Cast on Critical
Requirements and restrictions
1 requirement groupsSource requirement text
Requires: Level (1-90), (4-157) Int
Gem level progression
40 levels| Level | Requires Level | Int | Base Damage | {0}% increased Energy gained |
|---|---|---|---|---|
| 1 | 0 | 4 | 100%, 100%, 100%, 100% | Not applicable |
| 2 | 3 | 9 | 100%, 100%, 100%, 100% | 3 |
| 3 | 6 | 14 | 100%, 100%, 100%, 100% | 6 |
| 4 | 10 | 21 | 100%, 100%, 100%, 100% | 9 |
| 5 | 14 | 28 | 100%, 100%, 100%, 100% | 12 |
| 6 | 18 | 35 | 100%, 100%, 100%, 100% | 15 |
| 7 | 22 | 41 | 100%, 100%, 100%, 100% | 18 |
| 8 | 26 | 48 | 100%, 100%, 100%, 100% | 21 |
| 9 | 31 | 57 | 100%, 100%, 100%, 100% | 24 |
| 10 | 36 | 65 | 100%, 100%, 100%, 100% | 27 |
| 11 | 41 | 74 | 100%, 100%, 100%, 100% | 30 |
| 12 | 46 | 82 | 100%, 100%, 100%, 100% | 33 |
| 13 | 52 | 92 | 100%, 100%, 100%, 100% | 36 |
| 14 | 58 | 103 | 100%, 100%, 100%, 100% | 39 |
| 15 | 64 | 113 | 100%, 100%, 100%, 100% | 42 |
| 16 | 66 | 116 | 100%, 100%, 100%, 100% | 45 |
| 17 | 72 | 126 | 100%, 100%, 100%, 100% | 48 |
| 18 | 78 | 137 | 100%, 100%, 100%, 100% | 51 |
| 19 | 84 | 147 | 100%, 100%, 100%, 100% | 54 |
| 20 | 90 | 157 | 100%, 100%, 100%, 100% | 57 |
Beyond level 20, 20 levels
| Level | Requires Level | Int | Base Damage | {0}% increased Energy gained |
|---|---|---|---|---|
| 21 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 60 |
| 22 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 63 |
| 23 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 66 |
| 24 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 69 |
| 25 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 72 |
| 26 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 75 |
| 27 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 78 |
| 28 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 81 |
| 29 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 84 |
| 30 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 87 |
| 31 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 90 |
| 32 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 93 |
| 33 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 96 |
| 34 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 99 |
| 35 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 102 |
| 36 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 105 |
| 37 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 108 |
| 38 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 111 |
| 39 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 114 |
| 40 | Not applicable | Not applicable | 100%, 100%, 100%, 100% | 117 |
Quality effects
2 effectsCast on Critical standard quality
- (0-10)% increased Reservation Efficiency
Advanced Thaumaturgy
This is the additional quality effect granted while the Gemling Legionnaire passive is allocated. The main value below is shown at 20% gem quality. Compare all gem bonuses.
- Buff grants 20% increased Critical Hit chanceQuality scaling: Buff grants (0-20)% increased Critical Hit chance
Recommended support gems
8 supportsRecommendation tier 1
Recommendation tier 2
Recommendation tier 3
Recommendation tier 4
Compatible support gems
34 source recordsShow 10 more compatible gems
Compatibility rules
Active Type: HasReservation, OngoingSkill, Meta, Persistent, Buff, CanHaveMultipleOngoingSkillInstances, GeneratesEnergy, Triggers
Granted by items
1 itemsAcquisition
2 sources- Absent Amulet: Absent Amulet · Uncut Spirit Gem Tier 14
- Uncut Spirit Gem: Absent Amulet · Uncut Spirit Gem Tier 14
How to engrave this skill
1 categoryVaal Orb outcomes
4 outcomes / 0 enchantmentsVaal Orb can corrupt Cast on Critical. One applicable outcome is selected, and the item normally cannot be modified again by ordinary crafting.
Patch history
1 changesWe missed one! Cast on Critical Strike now also cares about the Damage of the hit when determining how much energy to gain to prevent the use of high-crit low level skills, this should mean using lower hit frequency skills that hit harder are also now much stronger for this.

