Celestial Beacon

You create a mote of brilliant starlight at a point you can see within range. The mote sheds bright light in a 20-foot radius and dim light for an additional 20 feet.

When a creature you can see starts its turn in the bright light, you can use your reaction to cause the beacon to flare. Choose one of the following effects:

• Guiding Flare: The next attack roll made against the creature before the end of the turn has advantage.
• Revealing Radiance: If the creature is invisible, it becomes visible until the end of the turn.
• Warding Light: One creature of your choice within the bright light gains 1d4 temporary hit points.

Once you use your reaction to create an effect, you can’t do so again until the start of your next turn.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, you can create one additional mote for each slot level above 1st. Each mote must appear in a different space, and you can use your reaction to trigger an effect from any of your beacons.