A demon-smith’s utility knife. The lacquer is a shade of red that stains souls.
Weapon stats
Class
Dagger
world pool: Crimson Sakura Isles
Base damage
15
at 1x multiplier
True speed
0.725s
listed as 0.57s
Range
4 studs
NPC sell
$1,100
at 1x, 100% quality
Rune slots
3
Min ores
4
Recommended
5
ores
RNG-lock
10
ores w/ lock on
Forge odds curve — Crimson Sakura Isles anvil
P(Dagger class) P(Oni Tanto) ▏RNG-lock
Per-forge probability by crucible size N without RNG lock. The Dagger class curve peaks at N=5 on the gaussian weight table; Oni Tanto takes 29.4% of the Dagger variant roll at Crimson Sakura Isles. With RNG Lock at N≥10 the orange class line becomes a flat 100%.
Expected forges — with & without RNG lock
Ores (N)
P(Oni Tanto) no lock
Expected forges
With RNG lock
5
16.6%
~1 in 7
needs 10 ores
10
6.0%
~1 in 17
~1 in 4 locked
15
1.0%
~1 in 103
~1 in 4 locked
55
0.0%
~1 in 76,460,204,771,218,180,000,000
~1 in 4 locked
"Expected forges" = 1 ÷ combined probability of rolling the class and this
variant. RNG lock removes the class roll once N ≥ 10,
leaving only the 29.4% variant roll.
Top 3 ore recipes for Oni Tanto
Solved at the Crimson Sakura Isles anvil with RNG lock targeting the Dagger class — BiS god-roll, clean zero-waste split, and a no-raid farmable fallback.
Same-class alternatives at an identical 26.69x multiplier, quality
100, no traits or runes — pure damage ÷ true swing speed.
Frequently asked questions
How many ores do you need to RNG-lock Oni Tanto in The Forge?+
Oni Tanto is a Dagger: its class roll RNG-locks at 10 ores, its recommended crucible is 5 and its absolute minimum is 4. At 10+ ores only the variant roll remains — about ~1 in 4.
What is the best ore recipe for Oni Tanto?+
The solver's BiS recipe is 3× Supermassive Black Hole + 3× Extinctionite + 3× Kitsunite + 1× Frost Star — 26.69x multiplier, 29.4% per forge at Crimson Sakura Isles. See the recipe cards above to load it directly.
How fast is Oni Tanto really?+
The tooltip lists 0.57s but the real swing is 0.725s — listed speeds under-report. True DPS on this page is computed against the 0.725s figure, the same one the game engine uses.
Is Oni Tanto worth forging?+
Oni Tanto is a B-tier Dagger with 15 base damage and 3 rune slots. With RNG lock it lands in ~4 forges on average — check the comparison table for where it sits inside Dagger.