Potion of Speed

When you drink this potion you gain the
effects of the 'Haste' spell for 1 minute.
Haste: Until the effect ends; your speed is
doubled, you gain +2 AC bonus, you have
advantage on Dexterity saving throws, and
you gain an additional action on each of
your turns. That action can only be use to
take the attack action(only 1 attack), dash,
disengage, hide, or use an object action.
When the effect ends you are stunned for 1
round.