★ Butterfly Knife | Stained
The balisong's hallmark fan-like opening mechanism, which enables rapid concealed deployment, is what makes the Butterfly Knife both distinctive and restricted in many countries. This Covert skin from the Operation Breakout Weapon Case bears the Stained finish, achieved through a forced patina process using lemon and other agents to chemically discolor the blade's surface. Float values cover the full 0 to 1 range, and StatTrak-equipped variants are available.
Cheapest wear we have on this page. Pattern / float overpay is extra.
Operation Breakout Weapon Case: (case+key) ÷ drop chance. Average, not a promise.
Covert / missing collection peers: no contract estimate.
Price History & Performance
Price by Wear
Cases & Drop Odds for ★ Butterfly Knife | Stained
Probability of unboxing this skin per single case open, expected number of opens until you get one, and the case's expected return based on the current market value of every skin inside.
| Case | Drop Chance | Expected Opens | Open Cost | Market EV | EV vs Cost |
|---|---|---|---|---|---|
 Operation Breakout Weapon Case | 0.0200% | 5,000 | $14.00 | $0.65 | -95.4% |
Drop chance = official rarity odds ÷ size of that rarity pool inside the case. Market EV is the probability-weighted average of every skin's lowest current listing. "EV vs Cost" compares that EV against the case + key price — negative means opening loses money on average.
Where to Buy ★ Butterfly Knife | Stained
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