Glacies Sagitta

Name	Glacies Sagitta
Cooldown	at-will
Action	standard
Range	ranged
Special	DC 13+
Power	glacies
Class	arcanist
Category	Assault, Debilitation

At-will, standard action, ranged, DC 13+; you conjure a shard of jagged ice and launch it at a target within 120 feet. Roll spellcasting ability vs AC. On a hit, the target takes medium cold damage and its speed is reduced by 10 feet until the start of your next turn as frost spreads across its body.

DC +4: the target must make a Constitution save or be restrained in ice (Str save at end of each turn to break free).
DC +4: conjure a second shard targeting a different creature (stackable); each requires its own attack roll.