A whip of planes is a black bullwhip with the symbols of the four elemental planes etched on it.  When the player whips with it they can choose to rip a hole in through one of the planes which causes different effects.  The Fire plane causes lava and flames to spill through the tear.  The Water plane would cause water to spill through the tear blinding people with water.  Wind would cause a strong gust to fly through the tear and would knock over players in its path.  Last, the Earth plane would cause boulders to ram through the tear.  The tear remains open for one minute.  A small creature could fit through the tear but a medium creature could not.  The person who is attuned to the whip of planes can close the tear with a thought.

Proficiency with a Whip allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Damage: Fire, Damage: Bludgeoning, Damage: Force, Damage: Cold, Must be 5th level or higher to attune to this magic item., Combat, Finesse, Reach, Slow