Most unusual effects have colors that can be altered by Prismatic Gems.
 Gem Effects
These effects are attached to Ethereal Gems. Gems can be removed with a Master Artificer's Hammer and placed on a different unusual courier to give it that particle effect. Doing so will destroy the original courier.
 Other Effects
These particle effects are not linked to any Ethereal Gems, and are not officially categorized as Unusual quality.
|Star Ladder Grillhound||SLTV StarSeries Season Five ticket||Flames burn from courier's jaws.||Effect intensity increases with games watched|
|Wynchell the Wyrmeleon||Premier League Season Four ticket||Light shines from courier's eyes. Ghostly blue glow around courier.||Effect intensity increases with games watched|
|Inky the Hexapus||G-1 Champions League Season 5 ticket||Blue light shines from shell. Bubble, shells and starfish fall from courier.||Effect intensity increases with games watched|
To do. Upgraded Greevils have their own unique effects, depending on the essences used.