Spellcasting. Elrik is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 20, +12 to hit with spell attacks). The lich has the following wizard spells prepared: Cantrips (at will): Greenflame Blade, Sword Burst, Booming Blade, Minor Illusion 1st level (4 slots): False Life, Protection from Good and Evil, Shield, Absorb Elements 2nd level (3 slots): Blur, Invisibility, Misty Step, Whither and Bloom 3rd level (3 slots): Animate Dead, Counterspell, Haste, Fireball 4th level (3 slots): Fire Shield, Greater Invisibility, Polymorph 5th level (3 slots): Conjure Elemental, Hold Monster, Far Step, Wall of Force 6th level (1 slot): Chain Lightning, Circle of Death, Disintegrate, Sunbeam, True Seeing 7th level (1 slot): forcecage, plane shift 8th level (1 slot): dominate monster, power word stun 9th level (1 slot): foresight
Multiattack: Elrick can make two main hand attacks with a scimitar and an offhand attack, or cast a cantrips, make a main hand attacks and off hand attacks. Main hand Scimitar Offhand Scimitar Vampiric Bite. Your fanged bite is a natural weapon, which counts as a simple melee weapon with which you are proficient. You add your Constitution modifier, instead of your Strength modifier, to the attack and damage rolls when you attack with this bite. It deals 1d4 piercing damage on a hit. While you are missing half or more of your hit points, you have advantage on attack rolls you make with this bite. When you attack with this bite and hit a creature that isn’t a Construct or an Undead, you can empower yourself in one of the following ways of your choice: You regain hit points equal to the piercing damage dealt by the bite. You gain a bonus to the next ability check or attack roll you make; the bonus equals the piercing damage dealt by the bite. You can empower yourself with this bite a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest. Bladesong You can use a bonus action to start the Bladesong, which lasts for 1 minute. It ends early if you are incapacitated, if you don medium or heavy armor or a shield, or if you use two hands to make an attack with a weapon. You can also dismiss the Bladesong at any time (no action required). While your Bladesong is active, you gain the following benefits: You gain a bonus to your AC equal to your Intelligence modifier (minimum of +1) Your walking speed increases by 10 feet. You have advantage on Dexterity (Acrobatics) checks. You gain a bonus to any Constitution saving throw you make to maintain your concentration on a spell. The bonus equals your Intelligence modifier (minimum of +1). you can add your Intelligence modifier (minimum of +1) to the damage of your melee weapon attacks while your Bladesong is active.
Song of Defense When you take damage, you can use your reaction to expend one spell slot and reduce that damage to you by an amount equal to five times the spell slot's level.