This prism is 3 inches across and radiates palpable magical energy. The twenty sides of the prism are each inscribed with Tir'su runes, each rune coincides with a different plane of existence. The Prism always has at least one rune linking to the last place it was used on the Prime Material Plane. The other sides are linked to planes determined by the DM.
The Prism has 2 charges and regains expended charges daily at dawn. As a Magic action, you can expend 1 of the cube’s charges to cast one of the following spells using the cube.
Gate. Pressing one face of the Prism, you cast Gate, opening a portal to the plane of existence keyed to that side.
Plane Shift. Pressing one face of the Prism twice, you cast Plane Shift, transporting the targets to the plane of existence keyed to that side.
While attuned to the Prism, you have advantage on Wisdom and Intelligence saves against spells cast by Aberrations. A spellcaster who is attuned to the Astral Prism can use it as a spellcasting focus.
Notes: Advantage: Wisdom Saving Throws, Advantage: Intelligence Saving Throws
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