If resolved against Infect, this is even more of a game-over than even Curse or Night, because Elesh both kills their creatures and sets up a 2-3 turn clock, depending on your boardstate
And with spare mana the damage can be dealt to any target
Finally, you can share the deck and write a guide on how to use it, and we will share it here
Exile target nonland card from your graveyard
For example, if you know that your opponent has only used PWH throughout their run, you can swap to a deck that runs less or no Shiny Shady and instead uses cards like Buffered Slime
As a land it cannot be countered, and its ability is always available for use