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As an item
The Rage Blaster fires large plasma projectiles straight ahead. The projectiles become stronger the higher the user's damage is. The gun itself can be used as an thrown projectile, even when the gun isn’t fully depleted.
The maximum damage will occur at 100%, and the damage values for each percent before 100 can be found here.
Equipping the Strangelove, Dark Man 4 or Gangster, Lady & Policeman Support Spirits will give the player a Rage Blaster at a start of a match.