Duck Season

You choose a creature you can see within range and mystically mark it as your quarry. Until the spell ends, you deal an extra 1d12 damage to the target whenever you hit it with a weapon attack, and you have advantage on any Wisdom (Perception) or Wisdom (Survival) check you make to find it. If the target drops to 0 hit points before this spell ends, you can use a bonus action on a subsequent turn of yours to mark a new creature.

If you use a Bonus Action to cast. When you cast this spell using a Bonus Action, you gain +2 DC on your next attack against the marked creature.

If you use an Action instead to cast. When you cast this spell using an Action, you can mark up to 6 creatures. On your next turn, on any ranged attack you make, you aim at all marked creatures at once, with +3 DC.

*If casted with an Action, then you can only use this spell with an Action again, after a long rest. Uses with Bonus Action and Reaction are unlimited.