There are a ton of PKs out there that will tend to kill in a single hit, like Blightsteel Colossus or a Commander with 21 or more power in that format
Modern and Pioneer might be interested too, especially if we think of Dismember being 1B and 2 life for -5/-5
Considering that the release of Aetherdrift was just three months ago, and Aetherdrift (as a racing themed set) introduced a lot more Vehicles into the Standard format, none of the top meta decks in the Standard format currently plays any Vehicle
Source: TCGplayer Main Genre Fantasy Release Date August 5, 1993 Created by Richard Garfield Video Game(s) Magic: The Gathering, Magic the Gathering Commander, Magic: The Gathering - Battlegrounds, Magic the Gathering: Duels of the Planeswalkers 2012, Magic: The Gathering - Duels of the Planeswalkers, Magic: The Gathering Duels of the Planeswalkers 2012, Magic: The Gathering Duels of the Planeswalkers 2013, Magic: The Gathering Duels of the Planeswalkers 2014, Magic: The Gathering Arena Character(s) Jace Beleren, Chandra Nalaar, Liliana Vess, Garruk Wildspeaker, Nissa Revane, Ajani Goldmane, Nicol Bolas, Teferi, Gideon Jura, Sorin Markov, Ral Zarek