Zone of Frost (5e Spell)
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|Casting time:||1 action|
|Components:||S,V, M (an ice cube)|
You call forth an area of freezing cold on a location you can see within range. Everything within a 20-feet square centered on that location is covered with frost, creeping up and encasing any creature unfortunate enough to be within the area of effect.
The entire area affected by the spell counts as difficult terrain. Any creature moving within it for the first time on their turn must make a Dexterity saving throw or fall prone.
When the ice appears and whenever a creature starts its turn on the area, or enters the area for the first time on their turn they have to make a Constitution saving throw, if they fail they become encased in ice, take 2d4 cold damage and are restrained until the spell ends, if they succeed on the Constitution saving throw they instead take half the cold damage and lose 10 feet of movement speed until the end of their next turn instead of becoming restrained.
Any creature that is restrained by the spell can repeat the Constitution saving throw at the end of their turn. If they succeed they break free of the ice and are no longer restrained but have their movement speed reduced by 10 feet until the end of their next turn.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher the area increased by 10-feet and the cold damage by 2d4 for each spell slot above 3rd.