Grav Controller with Tesla Cage?

I just equipped my Grav controller with two full sets of Lockdown IO's in Gravity Distortion and Gravity Distortion Field. Sometimes, the Hold animation on my target is shown as a Tesla Cage, not the usual swirlies. Is this a bug, or WAI to show when the +2 Mag proc fires?

The +2 Mag proc and the Devastation Chance for Hold proc both show up as a Tesla Cage. The Gravitational Anchor (Purple Immob set) Chance for Hold show up like your Gravity Distortion hold, where the foe floats.

I generally don't recommend those procs in standard Holds. It appears that they are doing a lot more than they really are because the T-Cage shows up even if the foe would have been held anyway. You would do better slotting GD with Damage.

Here's why: The single target holds, if they hit, will hold a Minion or Lieutenant in one shot. They have a 20% chance to "overpower" and hold a boss in one shot. So, even though that proc may look like it is helping, it isn't. It only provides any benefit at all on the 80% of bosses not held. And there's only a 20% chance to hit one of those 80%, which really means you have about a 16% chance ON BOSSES for the proc to help, and 0% chance on minions and lieutanants. That ends up being around 2-4% of the total foes. Compare that to slotting for Damage, where the damage will be applied to 100% of the foes hit.

Pretty much the same analysis on AoE holds, but you don't get the option to slot for Damage. That slot will probably do you more good somewhere else.

Local Man, thanks for that analysis. I wasn't sure the proc was worthwhile (not a great fan of proc's in general), but went for it to get the ranged defense bonus that comes from 6-slotting Lockdown.