Core Knight

Special Trait Name. Enter the description for your special trait.

Spellcasting. The Core Knight is a 9th-level spellcaster. Its spellcasting ability is CHA spell save DC 12, +0 to hit with spell attacks. The Core Knight has following 9th level spell prepared:
9th level (3 slots): power word kill 

Action Name. slash

Action Melee Attack. Melee Weapon Attack: +3 to hit, reach 50 ft., 4 targets. Hit:14  (6d8 + 2) slashing damage. 

No Nine. If the character tries to hit with a ninth level spell it has to make a constitution saving throw. 

Core Direct (Costs 2 Actions). the players have to make a dexterity saving throw with a DC of 14. If it fails the player has to roll a D10 to determine what happens 

10: Nothing happens

9: You lose your next turn

8: your AC becomes 9

7: You become frightened 

6: he summons 2 monsters under the challenge rating of 2. (the DM decides what they are)

5: you take 2d4 damage 

4: all of your spells are not prepared

3: the Core Knight regains one of his or her spell slots

2: you re-roll

1: you die