best overall
Best overall: Fateweaver · Corki
top lab_score across all comps this patch
- Lab 0.648
- 2.67 avg
- 55g
EXPERIMENTAL
Comp Deep Analytics
Lab Score multi-axis ranking, item counterfactual lift, hero-augment inference — sourced from the integrated analytics pipeline, updated offline.
Post-patch slice: games on/after 2026-04-21 (patch 17.1b live). 28,021 mature boards across 198 comps. Sample is ~96% VN2 — KR/EUW/NA/OCE scraping hadn't caught up. · /database →
Insight Cards
Auto-generated discoveries: strongest comp, niche picks worth trying, traps to avoid, item lift highlights, and trait breakpoint surprises.
hidden tech
Hidden tech: Fateweaver · Corki
niche (0.2% pickrate) but strong
- Lab 0.648
- 0.2% pickrate
- 2.67 avg · 55g
hidden tech
Hidden tech: N.O.V.A. · Zed
niche (0.1% pickrate) but strong
- Lab 0.589
- 0.1% pickrate
- 3.13 avg · 42g
hidden tech
Hidden tech: Shepherd · Vex
niche (0.1% pickrate) but strong
- Lab 0.587
- 0.1% pickrate
- 3.40 avg · 25g
trap comp
Trap: Brawler · Ezreal
popular (0.6% pickrate) but underperforms
- Lab 0.311
- 0.6% pickrate
- 5.20 avg · 93g
trap comp
Trap: Stargazer · Xayah
popular (1.1% pickrate) but underperforms
- Lab 0.341
- 1.1% pickrate
- 6.29 avg · 334g
trap comp
Trap: Primordian · Bel'Veth
popular (0.8% pickrate) but underperforms
- Lab 0.363
- 0.8% pickrate
- 4.13 avg · 110g
item discovery
Item reveal: Rabadon's Deathcap on Bard
+0.78 avg_place when equipped vs not
- +0.78 lift
- 2.33 with
- 3.11 without
item discovery
Item reveal: Morellonomicon on Bard
+0.60 avg_place when equipped vs not
- +0.60 lift
- 2.57 with
- 3.17 without
item discovery
Item reveal: Giant Slayer on Bard
+0.16 avg_place when equipped vs not
- +0.16 lift
- 2.83 with
- 2.99 without
star value
3★ payoff: The Mighty Mech
hitting 3★ drops avg_place by 4.67
- +4.67 gain
- 6.24 @ 2★ → 1.57 @ 3★
- 21/7 games
star value
3★ payoff: Riven
hitting 3★ drops avg_place by 4.07
- +4.07 gain
- 5.27 @ 2★ → 1.20 @ 3★
- 73/10 games
star value
3★ payoff: Kindred
hitting 3★ drops avg_place by 4.00
- +4.00 gain
- 5.21 @ 2★ → 1.21 @ 3★
- 258/24 games
trait breakpoint
Breakpoint: Bastion tier 2
hitting tier 2 gains +0.91 avg_place vs previous tier
- +0.91 gain
- 4.24 at tier
- 1040g
trait breakpoint
Breakpoint: Challenger tier 1
hitting tier 1 gains +0.40 avg_place vs previous tier
- +0.40 gain
- 4.18 at tier
- 2974g
trait breakpoint
Breakpoint: Psionic tier 1
hitting tier 1 gains +0.38 avg_place vs previous tier
- +0.38 gain
- 4.27 at tier
- 4997g
Lab Score Tier List
Four axes combined: power (posterior strength), stability (low placement variance), cap (win-rate ceiling), difficulty (inverse of completion rate). Lab Score ≈ 40% power + 20% each for the rest, with the difficulty-bonus flipped (easy comps score higher). Comps with < 20 mature games are excluded — their 4 axes may still be interpretable but the composite isn't.
| # | Comp | Games | Posterior | Power | Stable | Cap | Diff | Lab Score |
|---|---|---|---|---|---|---|---|---|
| 1 | Fateweaver · Corki | 55 | 2.67 | 0.76 | 0.53 | 0.21 | 0.02 | 0.648 |
| 2 | Space Groove · Blitzcrank | 188 | 2.72 | 0.76 | 0.36 | 0.35 | 0.01 | 0.641 |
| 3 | Fateweaver · Caitlyn | 143 | 2.79 | 0.74 | 0.34 | 0.27 | 0.03 | 0.615 |
| 4 | Space Groove · Blitzcrank | 333 | 2.81 | 0.74 | 0.26 | 0.32 | 0.05 | 0.602 |
| 5 | N.O.V.A. · Zed | 42 | 3.13 | 0.69 | 0.30 | 0.34 | 0.09 | 0.589 |
| 6 | Shepherd · Vex | 25 | 3.40 | 0.66 | 0.32 | 0.30 | 0.00 | 0.587 |
| 7 | Conduit · Viktor | 77 | 2.72 | 0.75 | 0.30 | 0.29 | 0.18 | 0.584 |
| 8 | Mecha · Aurora | 43 | 3.24 | 0.68 | 0.43 | 0.22 | 0.10 | 0.581 |
| 9 | Stargazer · Jhin | 43 | 3.02 | 0.71 | 0.12 | 0.43 | 0.09 | 0.577 |
| 10 | Mecha · Fiora | 150 | 3.16 | 0.69 | 0.21 | 0.30 | 0.04 | 0.571 |
| 11 | Vanguard · Viktor | 65 | 3.31 | 0.67 | 0.37 | 0.20 | 0.10 | 0.565 |
| 12 | Vanguard · Teemo | 127 | 3.12 | 0.70 | 0.35 | 0.20 | 0.14 | 0.562 |
| 13 | Primordian · Kindred | 137 | 3.08 | 0.70 | 0.35 | 0.17 | 0.12 | 0.561 |
| 14 | Mecha · Bard | 109 | 3.24 | 0.68 | 0.23 | 0.27 | 0.07 | 0.560 |
| 15 | Meeple · Bard | 83 | 3.35 | 0.66 | 0.10 | 0.37 | 0.01 | 0.559 |
| 16 | Stargazer · Jhin | 90 | 3.21 | 0.68 | 0.21 | 0.26 | 0.04 | 0.558 |
| 16 | N.O.V.A. · Akali | 346 | 3.31 | 0.67 | 0.34 | 0.14 | 0.03 | 0.558 |
| 18 | Sniper · Jhin | 303 | 3.27 | 0.68 | 0.17 | 0.28 | 0.03 | 0.555 |
| 19 | Fateweaver · Twisted Fate | 146 | 3.32 | 0.67 | 0.34 | 0.14 | 0.06 | 0.551 |
| 20 | Marauder · Fiora | 85 | 3.21 | 0.68 | 0.25 | 0.26 | 0.12 | 0.550 |
| 21 | N.O.V.A. · Fiora | 190 | 3.35 | 0.66 | 0.20 | 0.23 | 0.04 | 0.543 |
| 22 | Conduit · Nami | 28 | 3.04 | 0.71 | 0.30 | 0.11 | 0.13 | 0.541 |
| 22 | Bastion · Jhin | 33 | 3.69 | 0.62 | 0.34 | 0.20 | 0.06 | 0.541 |
| 24 | Vanguard · Bard | 131 | 3.36 | 0.66 | 0.21 | 0.23 | 0.06 | 0.540 |
| 25 | Stargazer · Jhin | 42 | 3.34 | 0.67 | 0.14 | 0.28 | 0.07 | 0.538 |
Item Lift (Counterfactual)
For a given comp + carry: avg place when the carry has this item vs avg place when they don't (same comp subset). Positive lift = item genuinely improves placement. Only rows with ≥ 15 games on each side shown.
| Carry | Item | N+ / N− | Avg with | Avg without | Lift |
|---|---|---|---|---|---|
| Xayah | Battle Bunny Crossbow | 50 / 360 | 1.94 | 4.50 | +2.56 |
| Corki | Edge of Night | 19 / 789 | 2.47 | 4.66 | +2.19 |
| Xayah | Battle Bunny Crossbow | 22 / 160 | 3.32 | 5.13 | +1.81 |
| Urgot | Deathblade | 15 / 37 | 2.77 | 4.54 | +1.77 |
| Master Yi | Giant Slayer | 15 / 17 | 4.64 | 6.22 | +1.58 |
| Master Yi | Edge of Night | 23 / 16 | 3.91 | 5.44 | +1.52 |
| Graves | Hand Of Justice | 17 / 97 | 3.18 | 4.60 | +1.42 |
| LeBlanc | Rabadon's Deathcap | 45 / 360 | 3.70 | 5.11 | +1.41 |
| Sona | Archangel's Staff | 23 / 64 | 2.76 | 4.08 | +1.31 |
| Zoe | Ekko's Patience | 33 / 53 | 3.09 | 4.30 | +1.21 |
| Master Yi | Giant Slayer | 15 / 24 | 3.80 | 5.00 | +1.20 |
| Kindred | Deathblade | 21 / 60 | 3.90 | 5.10 | +1.20 |
| Kindred | Giant Slayer | 17 / 29 | 3.94 | 5.14 | +1.20 |
| Karma | Spear of Shojin | 25 / 32 | 4.44 | 5.56 | +1.12 |
| Lissandra | Spear of Shojin | 35 / 23 | 2.97 | 4.08 | +1.11 |
| Jhin | Last Whisper | 16 / 69 | 2.13 | 3.23 | +1.11 |
| Teemo | Giant Slayer | 30 / 30 | 3.17 | 4.27 | +1.10 |
| Fiora | Edge of Night | 18 / 25 | 2.50 | 3.60 | +1.10 |
| Fiora | Bloodthirster | 20 / 28 | 3.65 | 4.71 | +1.06 |
| Vex | Rabadon's Deathcap | 16 / 107 | 3.67 | 4.71 | +1.05 |
| Jhin | Giant Slayer | 18 / 37 | 2.50 | 3.54 | +1.04 |
| Teemo | Giant Slayer | 25 / 19 | 3.24 | 4.26 | +1.02 |
| Jhin | Guinsoo's Rageblade | 15 / 24 | 2.40 | 3.42 | +1.02 |
| Blitzcrank | Hextech Gunblade | 19 / 162 | 1.53 | 2.53 | +1.00 |
| Nami | Radiant Nashor's Tooth | 18 / 648 | 3.67 | 4.67 | +1.00 |
Hero-Augment Dependent Candidates
Structural anomaly: cost-1 carries reaching 3★ at level 8+ almost always. Set 17 has no augments in the API, so this is inferred from board shape, not augment text.
| Atypical carry | Cost | Baseline | Flagged | Median z | Δ place | Hypothesis |
|---|---|---|---|---|---|---|
| Urgot | 3 | 7.4% | 14/64 (22%) | 2.00 | -2.16 | atypical_augment_carry |
| Pyke | 2 | 5.9% | 11/58 (19%) | 2.12 | -0.65 | low_cost_augment_carry |
| Sona | 5 | 9.4% | 5/35 (14%) | 2.00 | -2.17 | high_cost_augment_carry |
| Sona | 5 | 9.4% | 4/29 (14%) | 2.90 | +0.52 | high_cost_augment_carry |
| Miss Fortune | 3 | 9.4% | 3/26 (12%) | 2.62 | +0.39 | atypical_augment_carry |
| Morgana | 5 | 3.2% | 6/53 (11%) | 2.00 | +0.50 | high_cost_augment_carry |
| Morgana | 5 | 3.2% | 11/100 (11%) | 2.04 | +0.03 | high_cost_augment_carry |
| Meepsie | 2 | 1.6% | 5/56 (9%) | 2.06 | +0.92 | low_cost_augment_carry |
| Lissandra | 1 | 2.8% | 5/58 (9%) | 2.00 | -1.48 | low_cost_augment_carry |
| Morgana | 5 | 3.2% | 3/36 (8%) | 2.00 | -1.12 | high_cost_augment_carry |
| Sona | 5 | 9.4% | 4/52 (8%) | 2.00 | +0.96 | high_cost_augment_carry |
| Tahm Kench | 4 | 0.4% | 3/40 (8%) | 3.12 | -0.55 | high_cost_augment_carry |
| Meepsie | 2 | 1.6% | 4/53 (8%) | 2.00 | -1.54 | low_cost_augment_carry |
| Sona | 5 | 9.4% | 3/43 (7%) | 2.00 | -0.55 | high_cost_augment_carry |
| Urgot | 3 | 7.4% | 9/137 (7%) | 2.00 | -2.79 | atypical_augment_carry |
Emblem-Dependent Comps
Comps whose mature games consistently carry a specific emblem. Lift = avg_place_without minus avg_place_with (positive = emblem helps).
| Emblem | Freq | w/ emblem | w/o | Lift |
|---|---|---|---|---|
| Stargazer | 97% | 3.51 | 5.50 | +1.99 |
| SummonTrait | 44% | 4.00 | 5.78 | +1.78 |
| MeleeTrait | 65% | 3.63 | 5.31 | +1.68 |
| SummonTrait | 80% | 3.76 | 5.18 | +1.43 |
| DarkStar | 74% | 3.51 | 4.84 | +1.33 |
| MeleeTrait | 41% | 4.00 | 5.24 | +1.24 |
| SummonTrait | 49% | 3.71 | 4.94 | +1.24 |
| SummonTrait | 54% | 3.41 | 4.61 | +1.20 |
| SpaceGroove | 93% | 4.66 | 5.73 | +1.07 |
| DarkStar | 94% | 5.44 | 6.50 | +1.06 |
| DRX | 38% | 3.20 | 4.20 | +1.00 |
| MeleeTrait | 38% | 2.25 | 3.25 | +0.99 |
| MeleeTrait | 68% | 3.52 | 4.46 | +0.94 |
| SummonTrait | 82% | 3.33 | 4.25 | +0.92 |
| DRX | 43% | 3.77 | 4.62 | +0.85 |
Most-Contested Comps
Lobby-level conditional: when ≥ 2 players in the same match pick the same primary carry, both take a penalty.
| Comp | Contest rate | Contested | Exclusive | Penalty |
|---|---|---|---|---|
e6f6644339be | 16% | 7.60 | 4.92 | +2.68 |
d7a490276889 | 11% | 6.33 | 3.83 | +2.50 |
231f8659c283 | 22% | 6.00 | 3.61 | +2.39 |
| Bastion · Jhin | 9% | 4.67 | 2.83 | +1.83 |
8fc6444f8e00 | 11% | 6.44 | 4.68 | +1.77 |
| Stargazer · Jhin | 14% | 4.50 | 2.81 | +1.69 |
5f88425acbfe | 8% | 5.20 | 3.71 | +1.49 |
8d8d3b92e317 | 12% | 7.30 | 5.91 | +1.40 |
44066b3b27d8 | 9% | 6.25 | 4.87 | +1.38 |
4b6a981d0a6c | 42% | 4.41 | 3.04 | +1.37 |
Trait Breakpoints
Corpus-wide, per trait, avg placement at each activation tier. Marginal gain = improvement over previous tier. Big jumps are worth pushing for.
| Trait | Tier | Games | Avg place | Top 4 | Win | Marginal gain |
|---|---|---|---|---|---|---|
| Bastion | 2 | 1040 | 4.24 | 55% | 14% | +0.91 |
| Challenger | 1 | 2974 | 4.18 | 58% | 12% | +0.40 |
| Psionic | 1 | 4997 | 4.27 | 55% | 11% | +0.38 |
| Dark Star | 1 | 13584 | 4.33 | 53% | 13% | +0.35 |
| Stargazer | 1 | 902 | 4.39 | 51% | 15% | +0.35 |
| Mecha | 2 | 482 | 4.16 | 60% | 17% | +0.34 |
| Space Groove | 2 | 1753 | 4.40 | 52% | 12% | +0.24 |
| Timebreaker | 2 | 944 | 4.20 | 55% | 16% | +0.23 |
| Meeple | 2 | 1097 | 4.38 | 51% | 12% | +0.20 |
| Stargazer | 3 | 164 | 4.73 | 46% | 17% | +0.17 |
| Brawler | 1 | 11892 | 4.46 | 51% | 14% | +0.12 |
| Voyager | 2 | 1830 | 4.26 | 55% | 12% | +0.10 |