@i-Norm Its a Rift Relic. When the player is about to be knocked, it would put them in a phase.
There's also other Rift Relics, such as one that heals nearby teammates as well as yourself, (which is overpowered when used by a support legend as it applies double healing to the teammates as well), and hover boots which is a Titanfall thing, but that's currently disabled due to game breaking bugs.
Also keep in mind that the purple packs that are spawning around the map is what contains these items.
These packs also contain weapons, such as the Spitfire, (back when it was heavy ammo), the Wingman, (skull hopup and digital threats), G7, (with sniper optics), and the Prowler, (with selectfire and the 2x-4x scope).