Tibia's Summons

You summon a group of spectral skeletons to attack creatures around a point you choose within range. Make a melee spell attack against each creature of your choice in a 10-foot radius sphere centered on that point. On a hit, a target takes 4d6 + your spellcasting ability modifier slashing damage.
For the purpose of features that enhance undead you control, such as Undead Thralls from the School of Necromancy, these attacks count as a weapon attack made by an undead creature you control and created with this spell.
At Higher Levels.
When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d6 for each slot above 4th.