Ideally you and another player would pass it back and forth, or you would use an effect like Mass Mutiny to take it back to reuse
This may remind veteran fans of the powerful Modular mechanic from the Mirrodin block, except Gruff Triplets doesn't focus on artifacts
If they're excited to keep playing, they'll figure out all the details eventually
This requires two copies of Karn and two copies of Kiora, Behemoth Beckoner between the battlefield and graveyard, as well as enough Devotion
Expect to encounter Borderless Vault Boy Cards, Showcase Pip-Boy Frames, Serialized Bobblehead cards, Rares and/or Mythics, Traditional Foils and Extended-Art cards
Two mana to activate goes some of the way to keeping it more balanced, but its still a monster of a card in all sorts of decks