Arcane Foresight

As an action, you can incinerate a potent mix of herbs and animal entrails. The incineration must occur due to a magical source of flame, be it a spell or a brazier. Up to 6 creatures of your choosing (including yourself) can inhale this smoke. Every creature affected by the smoke sees a brief flash of the next 6 seconds. Any creature targeting the affected creatures with an attack gains disadvantage until the start of your next turn. Affected creatures also gain advantage on saving throws until your next turn.