120 ft (5 ft
V, S, M
, up to 1 minute
A silvery beam of pale light shines down in a 5-footradius, 40-foot-high cylinder centered on a point within range. Until the spell ends, dim light fills the cylinder.
When a creature enters the spell's area for the first time on a turn or starts its turn there, it is engulfed in ghostly flames that cause searing pain, and it must make a Constitution saving throw. It takes 2d10 radiant damage on a failed save, or half as much damage on a successful one.
A shapechanger makes its saving throw with disadvantage. If it fails, it also instantly reverts to its original form and can't assume a different form until it leaves the spell's light.
On each of your turns after you cast this spell, you can use an action to move the beam up to 60 feet in any direction.
When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1dlO for each slot level above 2nd.
several seeds of any moonseed plant and a piece of opalescent feldspar
Verbal Component (Alternative):
From the heavens, pale light does stream, a radiant sliver, this hallowed moon beam. Class:
DamageSource: Player's Handbook [5th Edition] (page 261)
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Below are commonly asked questions about this spell. Some of the information is pulled official D&D sources (such as books and the twitter feeds of D&D officials), but other information is derived from forums and online discussions. As always, it is up to the DM to decide how they wish to spell questions. If you have a FAQ about this spell that you feel other DM's may wish to know, please send us the message!
Does moonbeam deal damage when you cast it? What about when its effect moves onto a creature?
No, to both questions. The spell clearly states:
When a creature enters the spell's area for the first time on a turn or starts its turn there
In addition, the Sage Advice Compendium verifies:
Some spells and other game features create an area of effect that does something when a creature enters that area for the first time on a turn or when a creature starts its turn in that area. On the turn when you cast such a spell, you’re primarily setting up hurt for your foes on later turns. Moonbeam, for example, creates a beam of light that can damage a creature who enters the beam or who starts its turn in the beam.
Can you throw a creature into moonbeam's area of effect to cause damage?
Yes, if you are capable of doing do. However that a creature is subjected to such an area of effect only the first time
it enters the area on a turn.
The official Sage Advice Compendium verifies:
Entering such an area of effect needn't be voluntary, unless a spell says otherwise. You can, therefore, hurl a creature into the area ... We consider that clever play, not an imbalance, so hurl away! Keep in mind, however, that a creature is subjected to such an area of effect only the first time it enters the area on a turn. You can't move a creature in and out of it to damage it over and over again on the same turn.
Other Planes and Effects
Below is information about this spell as it relates to other planes and area of effects (i.e. underwater). Some of the information is pulled official D&D sources (such as books and the twitter feeds of D&D officials), but other information is derived from forums and online discussions. As always, it is up to the DM to decide how they wish to handle spell effects.
Underwater - Verbal Component
Official rules have been verified by Jeremy Crawford - "No rule prohibits verbal components from working underwater. Keep in mind that if you're talking, you're not holding your breath." Hence, while submerged underwater and holding its breath, a creature can cast a spell that requires a verbal component. After casting the spell, if the creature can't breathe underwater, it immediately runs out of breath. The creature can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round).