It's an Oak tp + shield III counter to finish shielded person off even with ultimate escape (though usually someone else than that DA should end that, while you tp out to base or flag near victim, or warp strike your way out of enemy base ).
Or......or even better warp stirke to nearest portal tower and not only let your buddies kill annoying oak but lock down enemy portal before anyone even sees you back there then tp out to opposite side and rush that portal while everyone tps out to the first portal or just tp back home after locking down enemy portal laughing while giants rush their base.
