Spell Damage is a prefix that turns up on Off Hand, Relic and Armor. It gives Spell Damage: +3% to +5% at its lowest step, +42% to +48% at its best — and you need item level 116 before the best one can appear at all.
It comes up at weight 4 when the game rolls affixes, never doubles up with another affix that does the same job (spellDamage), and it is what puts Humming, Thrumming, Resonant, Occult and Apocalyptic in an item's name — so you might pick up a Humming Wand.
No Unique carries it at a fixed number.
Every step
10 steps · lowest to best
| Tier | Needs item level | Gives | Prefix word | Reads as |
|---|---|---|---|---|
| T1 | 1 | +3% to +5% | Humming | Humming Wand |
| T2 | 6 | +6% to +7% | Humming | Humming Wand |
| T3 | 14 | +8% to +11% | Thrumming | Thrumming Wand |
| T4 | 24 | +12% to +14% | Thrumming | Thrumming Wand |
| T5 | 36 | +15% to +19% | Resonant | Resonant Wand |
| T6 | 55 | +20% to +26% | Resonant | Resonant Wand |
| T7 | 75 | +27% to +30% | Occult | Occult Wand |
| T8 | 92 | +31% to +35% | Occult | Occult Wand |
| T9 | 105 | +36% to +41% | Apocalyptic | Apocalyptic Wand |
| T10 | 116 | +42% to +48% | Apocalyptic | Apocalyptic Wand |
Where you will see it
224 bases it can land on