If used on cooldown, it provides approximately 4 gold every 10 seconds saved in ward buying costs (75g/(180/10)secs = 4.166g per 10s); just slightly less than Philosopher's Stone or more than other gold per 10 items.
The ward does not reveal nearby stealthed units.
The ward lasts for 3 minutes.
The passive bonus damage is magic damage and does not proc lifesteal or spell vamp.
Wriggle's Lantern is only available in the Summoner's Rift game mode.
The proc from Madred's Razors does not stack with Wriggle's Lantern.
The Mastery Artificer reduces the ability cooldown to 2 minutes and 33 seconds, further increasing its gold saving abilities, and ward coverage.
It is a great item for junglers since the passive greatly improves jungling speed, while also allowing them to ward important objectives and junctions without sacrificing an item slot.
This item is an upgrade from Madred's Razors, which also improves jungling speed. A common strategy for junglers is buying Madred's Razors and upgrading it to Wriggle's Lantern early game.
It can also be used for lane control, granting the ability to clear minion waves faster than the opposing team and keep them behind their tower while using the free ward to prevent being surprised by an enemy gank. It provides sustainability while in lane with the lifesteal and allows "farming" minions more effectively. This item is also great if you are losing the lane as it helps you continue farming and stay in lane.
It is also useful for controlling major objectives such as Dragon and Baron Nashor, as it greatly decreases the time required to kill them.
The free Sight Wards regularly provided make this task even easier, as they can be constantly used to watch for the enemy team attempting them, and also supplement junglers to gank lone attempts.
Piltover's Master Pathfinder and Champion of the League, Ezreal, recently returned from a successful archeological expedition to Kumungu, the mysterious jungle region located beyond the Great Barrier, deep within the southern half of continental Valoran. "Kumungu is a dangerous place for most, but danger is of no concern to me," Ezreal announced during a special presentation to the Arcanum Majoris, the League's scholastic branch based in the Institute of War. "New expeditions (to Kumungu)? Count on it."
During the event, Ezreal stunned the assembled scholars by unveiling and donating an artifact he discovered during his expedition. It is expected to be sanctioned for use in League matches once the object can be duplicated and its duplicates are fully tested in the League's Public Trials and Resolutions battle arena.
To the untrained eye, the artifact may appear to be merely a mundane lantern. "It's much more than that," said Professor Alowicious Chucat, Lead Archaeologist for the Arcanum Majoris. "Upon closer examination we discovered a name etched in the base of the Lantern." Indicating the weathered engraving of the name Wriggle, Chucat continued, "It would seem that this was an important artifact for whoever originally owned it. Judging by the bladed edges on the bottom and the well-worn handle, it has definitely seen combat. I surmise that it was likely used to ward off predatory animals native to the region. It is definitely a tool specially crafted for jungle navigation."
Scholars universally agree that Kumungu could hold a wealth of valuable artifacts. Unfortunately, the dangers associated with such a savage and mysterious realm have not deterred a recent rush of amateur explorers to the area. Subsequently, the League has issued an advisory against such expeditions. "Most who fancy themselves adventurers or archaeologists are in fact neither," Chucat further commented. "Many who hear of Ezreal's exploits think they can do something similar. It is important to remember that not only is Ezreal a League champion, but he is also the lead explorer for a city-state. Leave dangerous exploration to the professionals."[2]