The proper use of Pylons inside Echoing Nightmares will maximize your performance in them; when timed correctly, they will carry you to the tier 150 cap on just about any well-optimized and capable build. Always remember to equip your Follower (or at least one of your party members) with The Flavor of Time to lengthen the duration of Pylon pickups. Otherwise, note the following steps, along with benchmark times for builds that are well-suited for the task: 00:00-00:30 seconds — Blast down the initial few waves without any Pylons; most builds, especially ones with a high ranking according to our class tier lists, will be able to do so with ease. 00:30-1:30 — Use Speed Pylon along with Power Pylon around tier 100 or so, for a massive burst of pure power and mobility. This will carry you easily to about tier 130 based on raw damage and maneuverability around the battlefield. 1:30 — The use of Channeling Pylon should complement your chosen build. On resource- and cooldown-intensive builds, you can use it earlier, in conjunction with Speed and Power — for carefree spam and maximized progression through the mid tiers of Echoing Nightmares. Otherwise, pick it up along with Power (see below) to minimize the downtime of defensive cooldowns that will carry you through to the end. 1:30-2:30+ — Conduit Pylon is the most important Pylon to consider when doing an Echoing Nightmare, as its powers can carry you through more than 20 tiers on its own. While it cannot whittle down Rift Guardian spawns (just like in GRs), it will melt through Yellow (Rare) Monster spawns and trash. Taken around the ~130th tier — or otherwise timed right as the previous Pylon pickups expire — it will all but guarantee that you reach the Echoing Nightmare reward cap of tier 150.