Crimson Knight

Sentinel. When the knight hits a creature with an opportunity attack the creature's speed becomes 0 for the rest of the turn. Creatures provoke opportunity attacks from it even if they take the disengage action. When a creature within 5 feet of the knight is targeted by an attack, it can use it's reaction to make a single melee weapon attack against the attacker.

Multiattack. The knight makes three Flaming sword attacks or a two Flame Spear attacks.

Flaming Sword. The knight wields a flaming blade in each of it's hands., (+7 to hit). Each attack deals 8 (1d6+4) slashing and 6(1d10) fire damage.

Flame Spear. The knight can cause the swords in it's hand to disappear and form a long spear that is also coated in flames. The knight can use it's action to throw this spear as a ranged weapon attack (+7 to hit) (range 60/200ft). The spear explodes on inpact dealing 8 (1d6+4) bludgening and 11 (2d10) fire damage to the target.

Fire Ring (Recharge 5-6). The knight can use it's action to unleash a torrent of flames around itself, all creatures within 20 feet of the knight must succeed on a dexterity saving throw (DC 13) or take 5d10 point of fire damage. A creature takes half as much on a successful save.

Parry. The knight adds 3 to its AC against one melee attack that would hit it. To do so, the knight must see the attacker and be wielding a melee weapon.

Interception. While wielding it's flame blades, whenever a creature within 5 feet of the knight is hit by an attack by an attacker it can see, it can use it's reaction to reduce the damage by 1d10+3 (to a minimum of 0).