mtg cards that destroy all creatures (Commander / EDH Deck) Destroy all lands or all creatures Deadly Tempest · Commander 2020

You do need a mana base that casts your commander on time, consistently

Companion:Before each game begins, you may select one card with the companion mechanic

Spellslinger builds, or burn decks that play a lot of instants and sorceries would make the most out of Smoldering Egg

The loss of Aladdins Lamp, Armageddon Clock, Clockwork Avian, Kormus Bell, Tetravus, Triskelion and Yotian Soldier were huge, especially to those who utilized those Artifact creatures that were no longer being printed

Im leaving aside payoffs that care specifically about Blood tokens, Incubator tokens, and Zombie tokens for similar reasons

That seems to be just for flavor, and summon doesn't have any impact on the rules that we know of