If a caster casts the Create Bonfire cantrip and creates a bonfire in the square a creature is occupying, and the creature either chooses to stay in a square occupied by the bonfire or is forced to stay in that square, is the creature damaged twice? Once when the fire is created and once when the creature ends its turn there?
Create Bonfire says:
Any creature in the bonfire’s space when you cast the spell must succeed on a Dexterity saving throw or take 1d8 fire damage. A creature must also make the saving throw when it enters the bonfire’s space for the first time on a turn or ends its turn there.
If so, then this cantrip looks like it would be more powerful than other damage cantrips, particularly if the caster's companions have some way to restrict movement. Is that correct?