Blighted Knight

Magic Resistance. The blighted knight has advantage on saving throws against spells and other magical effects.

Spellcasting. The blighted knight is a 15th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 18, +10 to hit with spell attacks). It has the following paladin spells prepared:

1st level (4 slots): command, compelled duel, searing smite

2nd level (3 slots): hold person, magic weapon

3rd level (3 slots): dispel magic, elemental weapon

4th level (2 slots): death ward, staggering smite

Multiattack. The blighted knight makes three longsword attacks.

Longsword. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) slashing damage, or 10 (1d10 + 5) slashing damage if used with two hands, plus 18 (4d8) necrotic damage.

Parry. The blighted knight adds 6 to its AC against one melee attack that would hit it. To do so, the blighted knight must see the attacker and be wielding a melee weapon.