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Alternately, if you want a slightly more gradual on-ramp, the new planeswalker decks are a good place to start if you want to try out the game around the kitchen table

Both have the ability to level the field, "Dark Dust Spirit" destroying all monsters, "Fenghuang" destroying all of the opponent's set spell/trap cards

Whenever this creature or another Dinosaur you control with flying enters, gain control of target creature an opponent controls until end of turn

The cost-reduction ability of Korvold, Gleeful Glutton doesn't change its mana cost or mana value, only the total cost you pay

This was pretty unlikely anyway given how many potential finishers the deck has, but its worth noting regardless