UWSC Full Glitch
The current meta for Plains in The Underworld Speed Clear is actually to "semi-glitch" as described in Terraway UW, T3 (UW), and T4 (UW). A more advance way to complete plains is Gakiway which is a slight modification of the current meta.
Some inexperienced teams find it more comforting to full glitch, especially when they are not confident in the abilities of their duos. Full-glitching allows the duos to glitch mindblades and patrol without popping reaper, and therefore with little risk of failing the entire run. Although full glitching is considerably slower than semi-glitch or Gakiway. Duos are T3 and T4 as they do pits and plains together as a duo.
In the full glitch, the T3 pops the patrol like usual. Then loops around to glitch that same patrol. In this same time, the T4 is simply holding the aggro of the 3 Terrorweb Dryder (yellow), the Wailing Lords, and the single Banished Dream Rider at the reaper spawn.
Only after the patrol is glitched: the T4 (UW) will then wait for T3 to be ready, and then the T4 will kill the sole Banished Dream Rider which spawns 3 Mindblade Spectres on pits side. The T3 will then glitch these 3 Mindblade Spectre as you would normally in the "semi-glitch" method. In semi-glitch method you have to glitch these mindblades by taking them around to pits side, but must aggro the 3 mindblades in a certain way, please see T3 as it is an in-depth explanation on semi-glitch. If you do not want to glitch the 3 mindblades with semi-glitch method, you can also take the 3 mindblades around to pools side. This will be further discussed below under "Glitching Mindblade Pop".
Once both the patrol and mindblade group are surely glitched, the T4 will kill the 3 Terrorweb Dryder (yellow) and Wailing Lords which spawns the reaper. Now, the duos can either wait for everyone to be ready to tele to plains (for a safer 4 Horsemen quest). Or if the duos are confident, and the team will most likely not need a tele to any other part of the The Underworld, duos can proceed to take plains quest on their own.
Glitching the Patrol
Important Note: At ANY point if the T3 (UW) is failing in glitching the patrol or about to die, it is important for the T3 (UW) to abort and prioritize surviving. Whirl out if you have already SoH, or run away to get in a position that the T4 (UW) can safely resurrect you. Then you just try again.
The patrol is the group of mindblades and dream riders that spawns when you walk near plains reaper spawn. They patrol in a clockwise direction around reaper spawn. They are shown in image below, their patrol shown in a purple path.
In order to glitch the patrol, the patrol MUST be at position (2) in image above. They must be settled, that is once they are at position (2), they should be wandering randomly at that position. Cast "Shroud", "Shadow Form", and "Dwarven Stability" while drunk, then aggro the patrol while they are settled in position (2). Now don't forget to use "Shadow of Haste (SoH)"! You then bring them near the pools entrance at as shown in the videos, and shown as position (5) in image above. While pulling this patrol, you will have to sidewalk so they do not break prematurely. As your +33% Movement Speed from cons and pcons will break [Aggro|aggro]] of the mindblades if you forward walk. You will probably need to cast Shadow Form while glitching and will need to use the technique as described in T3, Mindblade Spectre, and the videos at the end of this article. The technique allows you to cast without getting rupted by the Mindblade Spectres. Bring the patrol to the spot shown as position (5) in image above, let the patrol calm down at that position if you can without dying. Then whirl out and make sure to forward walk back to reaper to break any aggro. As said before, if you are rupted you can always just whirl out or run and die at position (2) so the T4 can rez you. Or survive. Then you just have to wait for patrol to go all the way around and back to position (2) and repeat the process.
Videos