use sing :P
Spore!!! the move is spore
hypnosis
the move hypnosis
sing that's it
spore
Sing Sleep Powder Rest Yawn Leaf Whistle
grass whistle
There isn't one.
sleeping powder
The move Dark Void puts its opponents to sleep however in a double battle it'll put both of its opponents to sleep.
Spore is a move that puts Pokemon to sleep and ends with the letter E.
There are many moves for that, such as Hypnosis, and Sleep Power.