If speed is everything then run Crypt, and if you have minimal graveyard recursion then run Relic
Whether it's killing a bomb of a creature definitively and turning the tide of the game, or comboing out with Jaws of DefeatJaws of Defeat to take a player out, Overkill will seldom be unimpactful in a game of Commander
Though Lucky, The 15th Puppy is a great card to put into a dalmatian-focused Lorcana deck, it cant possibly hold a candle to the behemoth of dalmatian-deck cards that is Perdita, Devoted Mother
Enough of the quality life gain is artifact based and so mages off all colour can usually find an appropriate card or two so as to sure up their agro match ups
A white aggro/token deck with E
Ardenn, Intrepid Archaeologist also says you can eliminate the best blocker with Pacifism, and you can save sweet auras like Staggering Insight that are attached to a creature you need to sacrifice