Earth Walk

You touch a creature. Until the spell ends, the target gains a burrowing speed equal to its walking speed, and difficult terrain made of earth or stone doesn't cost extra movement. The creature can burrow through unworked earth and stone, and it doesn't disturb the material it moves through while burrowing. If the target's burrowed when the spell ends, it's immediately shunted to the nearest unoccupied space it can occupy, and it takes bludgeoning equal to 2x the feet it travels to reach that space.

At Higher Levels. When you cast this spell using a slot of 6th or higher, you target an extra creature for each slot above 5th.