On the serious side of things is Oathbreaker, in which players duel with 60-card singleton decks that have planeswalkers and a signature instant or sorcery in their command zone
Essentially, a deck that can get multiple lands out per turn, cast giant creatures early, and mash opponents to death using those giant creatures along with some trample sprinkled in here and there
When this card you control is destroyed by a card effect and sent to your Graveyard: You can target 1 Level 4 or lower Plant-Type monster in your Graveyard, except "Seed of Flame"
Each deck is pre-built and ready to play right out of the box, coming with a deck of 60 cards, two of which will be foil cards, as well as playing tools like a paper playmat, 10 damage counters, 1 paper lore tracker token, and a set of game rules