- "Critical blow percentage increase"
- —Item description
A Killer Crystal or Killer Orb (必殺の封印球) is a type of item in Suikoden. When a runemaster attaches a Killer Crystal to a character, it becomes a Killer Rune, which increases the critical hit chance.
Suikoden
- Sold: Teien Item Shop for 8000 bits (and later the item shop at Toran Castle run by Chandler)
- Found: Dwarf Trail
Suikoden II
- Dropped: Woodpecker in the Ryube Forest
- Obtained from the Guardian Deity - DTTU
Suikoden III
- Sold: Alma Kinan Village Item Shop (ch. 3-4, rare find, ch. 5), Brass Castle Item Shop (ch. 5, rare find)
- Dropped: Copper Sun, Rabid Rabbit
- Obtained: Mt. Hei-Tou Treasure (Blue Mantik), War Battle at Budehuc Castle (Thomas ch. 2, Victory+)
Suikoden IV
- Sold: Na-Nal Rune Shop
Suikoden Tactics
- Sold: Na-Nal Outfitter (rare find), Haruna Rune Shop
- Found: Ruins of Collanbal Dig Spot
Suikoden V
- Sold: Port Spinacks Rune Shop
- Dropped: Killer Bunny, Dilber - 100% (after "Stormfist Siege" War Battle)