Carver's Create Undead Familiar

You gain the service of an undead familiar. The familiar has 4 HP, an AC of 10, 15ft of movement, and a 1 in every stat unless modified. 

The creature can be commanded to do the following actions by using a bonus action:

Poke: Attack a target. Make a melee spell attack dealing 1d4 piercing damage

Death Burst: Cause the familiar to explode and expire. Dealing 1d4 + an addition 1d4 per modification

Additionally, by recasting this spell the undead can consume a specific body part from the table below, giving it an additional modification and 2 additional HP

• Bird Eyes: Your undead now has an 8 WIS and you can command your undead to keep a lookout
• Beast Legs: Your undead now has an 8 DEX and a movement speed of 30ft
• Beast Claws: Your undead now deals 2d4 damage with his poke
• Shark Fins: Your undead now has a swim speed of 30ft
• Beast Exoskeleton: Your undead gains +4AC
• Medium Beast Heart: Your undead now has an 8 CON and an additional 4HP
• Humanoid Brain: Your undead now has an 8 INT and can consume human body parts 

• Kenku mouth: Your undead now has a 12 CHA and can mimic voices it hears; It can also cast sending once per day, repeating the message received out loud. 
• Bugbear Arms: Your undead now has a 12 STR and 10ft of reach for actions and attacks
• Humanoid fingers: Your undead now has a 12 DEX and you can command your undead to use an item
• Triton Gills: Your undead gains the ability to breathe in water
• Dragonborn Teeth: Your undead gains an additional 1d4 damage, with the damage type being based on the dragonborn's lineage.
• Dwarf Eyes: Your undead now has a 12 WIS and gains 120 ft of darkvision
• Humanoid Soul: Your undead is now sentient, has a 12 INT, and gains the ability to consume any body parts

• Giant tendon: Your undead now has a 16 STR and can make 2 attacks when commanded
• Griffin Wings: Your undead now has a 16 DEX and gains a fly speed of 30 ft
• Fiend Skin: Your undead gains resistance to nonmagical slashing, piercing, and bludgeoning
• Hydra Head: Your undead gains 4 health at the start of its turn
• Dragon Heart: Your undead now has a 16 CON and gains 16 health