• Upon taking damage, decreases enemy shot speed by 33% for 5 seconds.
• Orbits the player, blocking enemy shots on contact. The stone orbits around the player faster than the other Guon Stones.

• Bluer Guon Stone - If the player has [+1 Bullets] , [Amulet of the Pit Lord] , or [Bullet Time] , the size of the Guon Stone is increased, it rotates at a fixed distance from the player while they are moving instead of on a slight delay, and it rotates faster but orbits farther from the player. If the Guon Stone blocks a bullet, it deals 15 damage to all nearby enemies. This synergy is very effective against bosses, due to the large sprays of bullets most bosses fire.
• Tile Match - If the player also has [Tetrominator] , whenever the player shoots, Blue Guon Stone will occasionally shoot a J Tetromino.
• Since the Farewell to Arms update , the Blue Guon Stone now rotates twice as fast compared to other Guon Stones, and therefore no longer affects the location of other Guon Stones that orbit around the player.
• If duplicates of this item are somehow obtained, further decreases enemy's shot speed and adds another Blue Guon Stone to the player.

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