They went through so much effort to make this arcane useless. Not only does it require you to be 3,000 below your Overguard cap, and to then regain 3,000 Overguard, but it also only applies to enemies WITHIN LINE OF SIGHT. As if the frame limitation and the Overguard cap management limitations weren't bad enough.

Stops proc’ing if your overguard is full and only cares about overguard on yourself (I.e. will NOT build up faster/keep activating by applying it to allies and companion)

I've noticed this too. Sadly it doesn't seem super useful on Dante, but I also haven't tested in a way that makes it so you are constantly loosing 3k overguard rapidly, and thus Dante's ease of replenishing overguard could come into play. But...I don't think you want to be in that situation in the first place.

Plague mage Dante inbound.

Rhino and Dante will like this.