Magic Items

Traveler's Hearth (Stone of Controlling Earth Elementals)
Wonderous Item (rare)
The Traveler’s Heart is a perfectly smooth sphere the size of a small shotput or orange, forged of meteorite iron.
The person possessing the Traveler’s Heart has the Delver ability while holding the stone: While underground, the bearer of this item always knows the item's depth below the surface and the direction to the nearest staircase, ramp, or other path leading upward.

If the stone is touching the ground, you can use an action to speak its command word and summon an earth elemental, as if you had cast the conjure elemental spell. The stone can't be used this way again until the next dawn. The stone weighs 5 pounds.

Wings of Flying
Wondrous item, rare (requires attunement)
Major tier
While wearing this cloak, you can use an action to speak its command word. This turns the cloak into a pair of bat wings or bird wings on your back for 1 hour or until you repeat the command word as an action. The wings give you a flying speed of 60 feet. When they disappear, you can't use them again for 1d12 hours.