Energy has been a defining aspect of the Standard metagame for quite some time now, but in the last couple of months it's become an increasingly one-dimensional archetype. Everything we're seeing is the three- or four-color midrange variations that rely on a combination of Red removal, Blue and Green energy synergies, and Black haymakers like Hostage Taker and The Scarab God. Not too long ago, there were aggressive variants of energy that threatened to end the game out of nowhere. If people have stopped respecting those archetypes, maybe it's time for a comeback in the wake of Rivals of Ixalan:

Sultai Pummeler - Ixalan Standard | RazMagic, 5-0 Standard League

• Creatures (22)
• 2 Greenbelt Rampager
• 4 Bristling Hydra
• 4 Electrostatic Pummeler
• 4 Longtusk Cub
• 4 Rogue Refiner
• 4 Servant of the Conduit

• Instants (6)
• 2 Dive Down
• 4 Blossoming Defense

• Sorceries (8)
• 4 Attune with Aether
• 4 Larger Than Life

• Enchantments (4)
• 4 Cartouche of Knowledge

• Lands (20)
• 2 Island
• 6 Forest
• 4 Aether Hub
• 4 Botanical Sanctum
• 4 Hashep Oasis

• Sideboard (15)
• 2 Greenbelt Rampager
• 4 Negate
• 4 Prey Upon
• 3 Rhonas's Last Stand
• 2 Spell Pierce

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The problem with these decks is that there isn't a lot of card selection in Standard, which means that you may run the risk of doing nothing if you don't draw an Electrostatic Pummeler in the early turns of the game. Fortunately, Longtusk Cub and Greenbelt Rampager are reasonable backup threats. These are both large relative to their costs and, while they can't double their power, they still play well with pump spells and Cartouche of Knowledge.

If you're tired of playing energy mirrors defined by haymakers and small edges in sideboarding, why not try just one-shotting your opponents instead?