Hot Potato

At the end of your turn, if you are holding this
Potato you take 3d6 Fire damage. You may use
one of your attacks to throw this Potato, if you
hit an enemy, they must succeed on a DC 20
Wisdom saving throw or be compelled to catch it.
If the Potato enters a space within 5ft of you, you
must go through the same DC 20 Wisdom saving
throw.
What was that song again?