Elixir of Echoes

When you drink this potion, you gain the ability to cast a spell that was cast by another creature within the last minute. The spell has to have been cast within 100 feet of you, and you must be aware that the spell was cast. Once imbibed, you can cast the copied spell once within the next minute, without expending a spell slot or material components. If the spell requires a saving throw or spell attack roll, you use the DC and attack bonus of the creature that originally cast the spell.