These items share the case's "Rare Special" probability pool. Each case opening has approximately a 0.26% chance to drop one of these.
★ Navaja Knife Covert 
★ Navaja Knife | Marble Fade Covert 
★ Navaja Knife | Tiger Tooth Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Doppler Covert 
★ Navaja Knife | Damascus Steel Covert 
★ Navaja Knife | Ultraviolet Covert 
★ Navaja Knife | Rust Coat Covert 
★ Stiletto Knife Covert 
★ Stiletto Knife | Marble Fade Covert 
★ Stiletto Knife | Tiger Tooth Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Doppler Covert 
★ Stiletto Knife | Damascus Steel Covert 
★ Stiletto Knife | Ultraviolet Covert 
★ Stiletto Knife | Rust Coat Covert 
★ Talon Knife Covert 
★ Talon Knife | Marble Fade Covert 
★ Talon Knife | Tiger Tooth Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Doppler Covert 
★ Talon Knife | Damascus Steel Covert 
★ Talon Knife | Ultraviolet Covert 
★ Talon Knife | Rust Coat Covert 
★ Ursus Knife Covert 
★ Ursus Knife | Marble Fade Covert 
★ Ursus Knife | Tiger Tooth Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Doppler Covert 
★ Ursus Knife | Damascus Steel Covert 
★ Ursus Knife | Ultraviolet Covert 
★ Ursus Knife | Rust Coat Covert All 17 standard items in this case, grouped by rarity. Drop rates per Valve's official probability disclosure.
To open the Prisma Case, you need one Prisma Case (free in-game drop or from the Steam Community Market) plus one CS2/CS:GO Case Key, which costs $2.49 USD on the Steam Marketplace. Right-click the case in your inventory and select "Open Container."
Drop rates per Valve's mandatory probability disclosure: Mil-Spec Grade ~79.92%, Restricted ~15.98%, Classified ~3.20%, Covert ~0.64%, Rare Special (★ Navaja Knife, ★ Navaja Knife | Marble Fade, ★ Navaja Knife | Tiger Tooth, ...) ~0.26%. Each drop also has roughly a 10% chance to be StatTrak™ on eligible skins.
The Prisma Case rare special pool contains 52 items: ★ Navaja Knife, ★ Navaja Knife | Marble Fade, ★ Navaja Knife | Tiger Tooth, ★ Navaja Knife | Doppler, ★ Navaja Knife | Doppler, ★ Navaja Knife | Doppler, ★ Navaja Knife | Doppler, ★ Navaja Knife | Doppler, ★ Navaja Knife | Doppler, ★ Navaja Knife | Doppler, ★ Navaja Knife | Damascus Steel, ★ Navaja Knife | Ultraviolet, ★ Navaja Knife | Rust Coat, ★ Stiletto Knife, ★ Stiletto Knife | Marble Fade, ★ Stiletto Knife | Tiger Tooth, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Doppler, ★ Stiletto Knife | Damascus Steel, ★ Stiletto Knife | Ultraviolet, ★ Stiletto Knife | Rust Coat, ★ Talon Knife, ★ Talon Knife | Marble Fade, ★ Talon Knife | Tiger Tooth, ★ Talon Knife | Doppler, ★ Talon Knife | Doppler, ★ Talon Knife | Doppler, ★ Talon Knife | Doppler, ★ Talon Knife | Doppler, ★ Talon Knife | Doppler, ★ Talon Knife | Doppler, ★ Talon Knife | Damascus Steel, ★ Talon Knife | Ultraviolet, ★ Talon Knife | Rust Coat, ★ Ursus Knife, ★ Ursus Knife | Marble Fade, ★ Ursus Knife | Tiger Tooth, ★ Ursus Knife | Doppler, ★ Ursus Knife | Doppler, ★ Ursus Knife | Doppler, ★ Ursus Knife | Doppler, ★ Ursus Knife | Doppler, ★ Ursus Knife | Doppler, ★ Ursus Knife | Doppler, ★ Ursus Knife | Damascus Steel, ★ Ursus Knife | Ultraviolet, ★ Ursus Knife | Rust Coat. The combined drop probability for any item from this pool is approximately 0.26% per case opening.
