Warlock Punch

Charge up power in your hand and unleash a devastating melee punch. Take your first turn to charge up, and attack on the second. Roll a spell attack. On a hit, you deal 2d6 bludgeoning damage and 2d8 necrotic damage + spell attack. 
If you are take damage before the second turn, this spell is interrupted and does not complete. You cannot move or take a bonus action once you cast this spell. 

Unique Properties. Warlock punch Carrie’s unique properties. You may choose to use the unique properties below.

• You may choose to use either your spell attack or strength when attacking. At level 15, you may add your strength bonus to the attack if you choose.
• at level 8, you may choose whether Warlock Punch deals Necrotic or Electric damage.
• at level 4, you gain the ability to focus this spell. When you take damage, roll concentration with a DC of 16. If you get 16 or above, you armor through the attack and can use your reaction to unleash the attack early. When you do this, add another 2d8 for the elemental damage.

At Higher levels. When you cast this spell at level four and above, you gain one additional damage dice per spell level (+1d6 bludge. &1d8 necrotic/electric).