For years, many Pokmon fans had questioned why Charizard was never made a Dragon-type Pokmon
It made it difficult for decks that wanted to specifically combat mono-red to attack it appropriately, since Nemesis would roadblock actual combat, or even lifegain strategies that should be good against it
Now were it Alolan Grimer, who is part Dark-type well, Dark-type Pokmon often have their moves named after questionable behavior: There's Bite, Crunch, Fake Tears, Foul Play, Payback, and more
During the clean-up step the turn Staying Power is destroyed, the effects will check and find out that yes, they should end
The ability to use it at instant speed to find a combo creature, destroy a creature, or exile an artifact or enchantment is incredibly useful