I am looking to choose spells for my Sorceror, and I found Earth Tremor in XgtE.
Range: 10 feet
You cause a tremor in the ground within range. Each creature other than you in that area must make a Dexterity saving throw. On a failed save, a creature takes 1d6 bludgeoning damage and is knocked prone. If the ground in that area is loose earth or stone, it becomes difficult terrain until cleared, with each 5-foot-diameter portion requiring at least 1 minute to clear by hand.
My problem is that no where in the spell description does it tell you how big of an area is affected. You clearly can choose a point within 10 feet (the range of the spell) but there no area listed.
I looked on DnD Beyond and they enter the information as “Range/Area: 10 feet”, but they also do the same thing for every spell even when there is no area involved (compare and contrast Fireball and Firebolt).
How big is the area affected by Earth Tremor?