Korok Leaf (5e Equipment)
From D&D Wiki
Wondrous item, common
This magic leaf is about three feet across at its widest point, and unlike normal leaves will not decay over time. It is said to originate from koroks, or at least the forests in which they dwell.
As an action, you can swing the leaf overhead with two hands. Doing so creates a powerful gust in a 5-foot-wide, 30-foot line in the direction of your swing. Any creature in this line must make a Strength saving throw with a DC equal to 8 + your proficiency bonus + your Strength modifier. Any creature that weighs more than 100 lb. (an adult humanoid) has advantage on this save. Any creature that weighs less than 5 lb. (a kitten) or is gaseous has disadvantage on the save. If a creature fails this save, it is unable to move towards you until the start of your next turn, though it can still retreat or move laterally. If the creature fails by 5 or more, it is also knocked prone.