Sunbeam is a level 6 evocation spell. This spell allows spellcasters to project a beam of light, Blinding and dealing Radiant damage to everything in its path. You can then use Recast Sunbeam on subsequent turns without expending a Spell Slot.
Description
A beam of brilliant light sears and Blinds all creatures in its path.
Until the spell ends, you can recast Sunbeam without expending a spell slot.
The incantation for Sunbeam is Incendē, the Latin command "set on fire/inflame!"
This spell creates a beam of light from the caster out to a distance of 18 m / 60 ft. The beam is 2.5 m / 8 ft wide.
Recast Sunbeam is a "granted" spell. Granted spells are issued to the caster after casting the original, and can be recast without spending another spell slot as long as Concentration is not broken. Granted spells such as this are not directly tied to the casters' repertoire of known spells (i.e., their spellbook icon in the game). Therefore, if a granted spell is cast when multiclassing, subsequent recasts (in this case, Recast Sunbeam) use the spellcasting modifier of the most recently acquired spellcasting class rather than the spellcasting modifier that was used for the initial casting of Sunbeam. In this case, it may result in an unexpectedly low spell save DC.
Sunbeam is a level 6 evocation spell. This spell allows spellcasters to project a beam of light, Blinding and dealing Radiant damage to everything in its path. You can then use 
on subsequent turns without expending a Spell Slot.
all creatures in its path.
UID
Spell flags
Level 6 Spell Slot
AoE: 18 m / 60 ft (Line)
Duration: 10 turns 
Constitution saving throw 
3 m / 10 ft and Attack Rolls suffer 
Disadvantage.
Advantage.
The Blood of Lathander (
Recharge: Long rest)
is not broken. Granted spells such as this are not directly tied to the casters' repertoire of known spells (i.e., their spellbook icon in the game). Therefore, if a granted spell is cast when multiclassing, subsequent recasts (in this case, 
Sunbeam on the Forgotten Realms Wiki