Gem of Brightness

This prism has 50 charges. While holding it, you can use an action to speak 1 of 3 command words for the following effects:
{1} Bright light in a 30-ft radius, dim 30 ft.
{2} 1 charge to fire a beam of light 60 ft at 1 creature. DC 15 Con save or blinded for 1 min. Can save at the end of each turn.
{3} 5 charges to shine a 30 ft cone (as #2)