Aelen's Soul Ferry

You sacrifice up to 3 undead creatures you control, gaining an ethereal projectile that hovers near you for each creature sacrificed in this way. As a part of this spell, or as an action as long as you are concentrating on this spell you may target any number of creatures up to the number of projectiles you have and make a ranged spell attack for each projectile.

On a hit, a projectile deals necrotic damage equal to half of the sacrificed creature's hit dice (round down). A creature killed by one of these projectiles animates as though you cast "Aelen's Powerful Animation" on the target.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you may sacrifice one additional target for each level. At 6th level, up to 3 creatures killed by this spell reanimate as though you cast "Create Undead". This effect follows the scaling of the "Create Undead" spell.