This cube is about an inch across. Each face has a distinct marking on it. You can press one of those faces, expend the number of charges required for it, and thereby cast the spell associated with it (save DC 17), as shown in the Cube of Force Faces table.
The cube starts with 10 charges, and it regains 1d6 expended charges daily at dawn.
Cube of Force Faces
Spell
Charge Cost
Mage Armor
1
Shield
1
Tiny Hut
3
Private Sanctum
4
Resilient Sphere
4
Wall of Force
5
10 charges/dawn. Press a face to cast its spell at save DC 17: Mage Armor (1), Shield (1), Tiny Hut (3), Private Sanctum (4), Resilient Sphere (4), Wall of Force (5).
RollQuest ships the D&D 2024 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.