Dark-mare Doors

When using this spell, you hover slightly off the ground, and a hole opens in your chest. A reddish light spills out, and wherever you want, as long as you can see the place, you open two portals leading to the Nightmare Realm. From each portal, or "door", a tall, lean creature emerges, propping itself up extra long arms, that instead of ending with hands, end with a large lump, with what seems to only be meat around a chunk of bone, with runes carved into the skin. These creatures are pitch black, with a reddish glow coming from within their chest, an elongated head, with three glowing red eyes. Two normal, and one taking up most space of the head, shaped more like the hole in your chest. You can command them to attack whoever you want, and command them both on the same turn. You can command them to move, or to attack, but you can't have any of them do both. They can only do one. When they attack, they slam their "fists" on the ground, creating a reddish shockwave, with a 10 metre radius. Anything within that radius takes 2d8 damage, with a chance to deal an extra 1d8 damage(chance is determined by getting 13 or higher with a d20). They can also instead of attacking, target one enemy and let out a high pitch screech toward the enemy. The enemy is stunned for one round. The creatures have the same amount of health as you, but rounded down and -30. While the spell is active however, you are completely vulnerable. You can't do anything. Anything that can harm you, both enemy and environment, gets advantage against you, and has a modifier of +4