Call of the High Arch

You rally the living dead, energizing the thralls arounds you, granting up to four ally undead within 60 feet of you the following benefits until the spell ends:

• Its speed increases by a number of feet equal to five times the spells level.
• Its AC gains a bonus equal to the spells level.
• It gains the ability to make an additional attack on each of its turn.

When the spell ends, make a DC 15 Constitution saving throw. On a failed save, any undead which benefited from this spell are instantly destroyed. On a successful save, the benefited undead can't move or take actions until after its next turn, as the magic reanimating them momentarily wicks out.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the DC when the spell ends increases by 1 and you can target one additional ally undead for each slot level above 3rd.