Curse Flame Pinion

When cast the caster may choose either fire, radiant, or necrotic damage as this spells damage type.

Wraps of green flame envelope the target, immobilizing them and dealing damage for every round they're immobilized. The target must make a strength saving throw or be restrained, taking 1d6 damage at the end of every turn until they succeed or the spell is dispelled. The duration of the spell is increased by 1 minute for each spell slot used above 3rd.