Shrub Star

It only drops in Master Mode, only from the Everscream, and only during the Frost Moon. The odds climb with the wave number, so farming it really means pushing deep into the event rather than killing a lot of trees early on. That takes a full setup: an arena, enough ammo, and a build that survives the late waves before the night ends.

You get a small Everscream that walks after you, and when it falls behind or you leave the ground it folds its legs in and rockets to catch up on a jet of fire. That animation is most of the reason to want it, since plenty of pets just hover.

• The tooltip borrows a line from the old twinkle little star lullaby.