mtg cards that deal damage to each opponent Endless Stream of 3 Burn Spells, But Is Enough... | Timeless BO3 Ranked Pain for All · Edge

Because it is only then that you know you are playing Commander the way it was meant to be played.

Urza, Lord High Artificer is a great way to easily achieve Leonardos mana sink, and Cybermen Squadron is a hysterical way to multiply your Thopter tokens like bunnies

19 Toshiro Umezawa Free Spells A unique and underrated commander, Toshiro Umezawa has the ability to provide instants in your graveyard with flashback whenever a creature an opponent controls dies

Create two tapped Powerstone tokens

One of the best ETB effects in green, Craterhoof will give all your creatures +X/+X and trample, which usually ends the game on the spot

You may well have to pick some things you don't want to and likely over things you did want and then shoehorn these random life gain things into your deck that you otherwise don't need or have better options you would rather have in the slot