Solstice Needle

Wondrous item, legendary (requires attunement by a druid or ranger)

This 6-inch-long needle of charred wood pulses with a dark green light. Attuning to it requires pricking your finger and allowing a drop of blood to run down the needle’s length. Once attuned, if anyone other than you attempts to attune to the needle, it immediately collapses into dust and is destroyed. The solstice needle has 5 charges and regains 1d4+1 expended charges daily at dawn.

A druid holding this needle can use it as a spellcasting focus. When you cast a druid spell that deals damage using the needle as the focus, you can expend 1 charge to deal the maximum possible damage instead of rolling. Additionally, when you cast a druid spell that requires targeted creatures to attempt a saving throw, you can expend 2 charges to force targets of the spell to make their first saving throw against the spell with disadvantage.

A ranger can wear the needle on a thin chain as an amulet and still gain its benefits. When you cast a ranger spell that requires concentration, you can expend 1 charge to have the solstice needle maintain concentration on the spell in your place. You are not considered to be concentrating on the spell and don’t need to make Constitution saving throws when you take damage to maintain the spell. Additionally, when you score a critical hit with a weapon attack, you can expend 1 charge to deal the maximum possible damage instead of rolling.