Bust of the Arcane Sculptorwondrous, very rare (requires attunement arcane spellcaster)

This marble bust weighs 4 pounds and depicts a heavily bearded man in a philosophical pose rumored to be Mordenkainen. Its base is covered in runes and appears to be well worn.

While you are holding this bust you can use it as an arcane focus. When you use this item as an arcane focus you gain the following benefits.

Artist’s Flair.

When you cast a spell you can create one minor visual effect as if with the cantrip Prestidigitation or make a visual change to the spell such as adding a color, changing its color, or making it appear to take on a shape.

Advanced Spell Sculpting.

When you cast a Conjuration, Evocation, or Necromancy spell you are able to create pockets of relative safety. When you cast a spell from any of these schools with a duration of instantaneous you can choose a number of creatures you can see equal to 1 + the spell’s level. The chosen creatures automatically succeed on their saving throws against the spell, and they take no damage if they would normally take half damage on a successful save.

if the duration is longer than instantaneous you can choose a spherical or conical area equal to up to half of the spell’s area that is not affected by the spell. As an action on any of your following turns you can change the area of the spell affected if the spell is still active. However the spell can never affect less than half its area or leave the area it would occupy if it was cast normally.

very rare