In the Pokmon video games, the only limitation placed on Pokmon attacks is if the move has what's known as PP, or Power Points
These are times where you let the matchup dictate how your deck should look and sideboard in a higher-drop or two that you had cut, perhaps to make room for cheaper but weaker cards
For six mana, you get the kind of board wipe where you get to keep your commander and everyone gets to keep their 0/1 Plant token that Khalni Garden made on turn one
If you want to try it out, here's Mono-Blue Tempo decklist from Mythic Championship Cleveland
The fact that Pelt Collectors ability triggers when creatures die as well as enter the battlefield is an important part of the card that allows it to be a better topdeck in the lategame than it otherwise would be
For example, decks led by owyn, Shieldmaiden thrives on a high count of Human creatures to maximize her token generation and card draw abilities