Echoes that match the DPS
Farm the set the main DPS actually uses. A random gold echo with the wrong main stat is vendor food. Intro and outro skills are the rotation, not flavor text.
Open this resource when a new resonator changes the echo target.
Towers and world bosses
Bring a sustain slot if the floor modifier shreds HP. Do not burn all stamina on a boss you cannot break yet.
Explore for chests when the stamina pool is empty. The map still pays.