This dragonling casts Flame Buffet, increasing the Fire Damage done to the target by 60. This effect stacks up to 5 times.
Using this item starts a 20 minute cooldown on this trinket, and a 1 minute cooldown on other guardian pet trinkets (such as the other mechanical dragonling type trinkets, Defender of the Timbermaw, etc). This means that there is still some value in keeping older dragonling trinkets after creating new ones.
The summoned dragon gains one level for every 5 points the user has in Engineering. So an engineer with Engineering 375 summons a level 75 dragonling.
Patch changes
Patch 4.1.0 - Arcanite Dragonlings are again always level 60 instead of scaling with the engineer's skill.
Cooldown reduced to 5 minutes
Patch 2.4.3 (2008-07-15): Arcanite Dragonlings once again scale with engineering skill.[citation needed]
Arcanite Dragonlings are now always level 60 instead of scaling with the engineer's skill.[1]
Engineering Dragonlings now have a 20 minute cooldown instead of 1 hour
Patch 1.4.0 (2005-05-05): The level of the Mechanical Dragonlings now scale with your engineering skill, so they will be always useful against enemies. Their damage and health has remained the same.
Patch 1.3.0 (07-Mar-2005): Mechanical Whelps have been boosted by five levels in order to be effective longer. Their damage has been slightly decreased to compensate for the additional damage that would have occurred with the change.