You become magically attuned to the earth and ground around you, enabling you to traverse it like a fish does water. Until the spell ends, you have tremorsense that extends out to 60 feet around you, you gain a burrowing speed of 40 feet, and you can hold your breath for 10 times as long as normal.

If this spell ends while you are underground and you lack a burrowing speed, you are trapped underground. Until you are excavated or you manage some way out on your own, you are buried.

Buried (New Condition)

To be buried, a target must be trapped in a substance which is too solid to swim or fly through. Without a suitable substance to be buried in, a target cannot suffer from this condition. If a creature or object is only partially buried, it does not suffer from this condition.

The substance it is buried in provides total cover from all directions. Unless the viewer can see through that substance, it also blocks line of sight. In addition, a buried creature suffers the following ailments while it remains buried:

• It is paralyzed, except that it is not incapacitated.
• It cannot use blindsight, and it is deafened unless it has tremorsense.
• It cannot breathe or provide somatic components for spells. If it normally needs to breathe, it also cannot speak or provide verbal components, it has disadvantage on saving throws made to maintain concentration, and it must hold its breath or suffocate.

A creature cannot be buried in a substance that it can swim or burrow through. If a buried creature gains this capability after being buried, it immediately stops suffering from this condition. A creature is also immune to this condition if it is immune to any of the grappled, restrained, or paralyzed conditions.