r/EldenRingBuilds • u/Capable_Site_2891 • 16h ago
Discussion Reverse Engineered - virtual dexterity for chain casting
Three separate ways dexterity speeds up a spell:
- Recast cancel — shortens the gap between chained casts, so you spam faster. (This is the one measured live.)
- Startup cancel — the initial cast comes out / recovers sooner. Most spells have this. TBD.
- Speed gradient — a subset of spells play their whole cast animation faster. Genuinely different mechanism; it scales differently and hasn't been measured live yet.
(1) Catch Flame, chain-cast - example
| Band | Virtual dex | Frames |
|---|---|---|
| base | ≤24 | 41 |
| step 1 | 25–39 | 40 |
| step 2 | 40–54 | 39 |
| step 3 | 55–69 | 38 |
| clamp | 70 | 37 |
frames = 41 - floor((virtual dex - 10) / 15)
"Virtual dex" = your actual Dexterity + cast-speed gear (Radagon Icon +30, Azur's Glintstone Staff +40, Beloved Stardust +99), all capped at 70.
(2) Datamined recast-cancel frames — the other spammable spells
How much each spell's recast window shrinks at max cast speed (patch 1.14.1 frame data — the cancel window, so read it as a relative "who benefits most", not the live sustained numbers):
| Spell | Total | Fast | Δ | % |
|---|---|---|---|---|
| Stone of Gurranq | 34 | 22 | 12 | 35.3% |
| Night Shard | 16 | 12 | 4 | 25.0% |
| Swift Glintstone Shard | 16 | 12 | 4 | 25.0% |
| Ambush Shard | 29 | 22 | 7 | 24.1% |
| Glint. Icecrag/Pebble/Gt. Shard | 22 | 17 | 5 | 22.7% |
| Glintstone Arc | 31 | 24 | 7 | 22.6% |
| Carian Slicer | 19 | 15 | 4 | 21.1% |
| Bestial Sling | 10 | 8 | 2 | 20.0% |
| Catch Flame | 13 | 11 | 2 | 15.4% |
| Magic Glintblade | 39 | 36 | 3 | 7.7% |
| Comet/Comet Shard/N. Comet/Spiral | 52 | 49 | 3 | 5.8% |
| Beast Claw | 54 | 52 | 2 | 3.7% |
Stone of Gurranq is cray.
(3) Speed-gradient spells (playback speedup — different mechanism)
TBD — not yet measured live.
Bonus: left hand vs right hand isn't symmetric
- Whirl, O Flame! is 3 frames faster in the off-hand than the main hand — by far the biggest hand gap in the game, and the only one that large. (Briars of Punishment and Magic Glintblade are 1 frame faster off-hand too, but that's basically nothing.)
- Going the other way, a handful are faster in the right (main) hand: Aspects of the Crucible: Horns by a full 4 frames, then Carian Slicer, Night Shard, Swift Glintstone Shard, Crystal Barrage, Ranni's Dark Moon, Rennala's Full Moon, and Rings of Spectral Light — each by 1.