Ashisogi Jizo: Ice Queen

Third of five legendary weapons made by the legendary Blacksmith.  Made for his second child with his daughter who is a genius on the battlefield a tactician who was cold and ruthless this staff amplify her tenfold.  Pick charisma, intelligence or wisdom it's increased too 23.

Cold Domain: Concentration spell. V,S. 1 action.  Up to 5 minutes. A chilled wind surrounds you that anyone within a 30 foot radius dome from you will need to do a d16 Constitution saving throw, on a failed save. take a 1d8 cold damage at the beginning of their turn if they are still within your radius on the next turn add 1d4 for each turn after. Half the damage if successful and no extra 1d4 next turn.  This does not effect ally's.

Frozen Tundra: 3 rounds: S. 1 action.  When slamming the staff on the ground a Icy Terrain in a 30-foot radius surround you.  Enemies within reach need to make a d17 strength saving throw. on a failed save.  They take 2d8 bludgeoning damage and they are restrained. On a success take half damage and not restrained. The area is Difficult Terrain. 

Pick one below based on what you need.                                                                                                                                        Glacial Defense: Reaction: On being targeted by physical attack you can have your AC increase to the to the needed amount to block. A large icy rock appears between you and the attacker.  The attack blocked is reflected back at the attacker and takes cold damage to the same amount you would have taken. Reaction returns on your turn.

  Glacial Mirror: Reaction: On being targeted by a spell you can have your AC increase to the to the needed amount to block.  When a spell is cast at you a mirror of ice appears to catch the spell. With the mirror you can target a creature and reflect the spell back at the creature it takes what ever you would have taken and it's turned to cold damage. Reaction returns on your turn.

Notes: Damage: Cold, Female with Ice Affinity