An artificer from Kaladesh is the only real choice for an energy deck, although Im surprised to see a (to my knowledge) new character debut instead of one of the inventors alluded to back in Kaladesh block
So, let's talk briefly about the likelihood of that happening
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At the beginning of that player's next upkeep, they may cast that card from exile without paying its mana cost.) Whenever chaos ensues, you may search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle
However, a strategy purely based around Snorlax needs to have support behind it to properly function: energy denial cards and a bit of luck so that the opponent does not open with just one Pokmon that can easily attack over