Sac outlets are useful and protecting your key goblins is lovely as well in the right matchups
This one-mana sorcery allows you to draw two cards and then discard two cards
Then, I can blink the planeswalker so I have two copies of the same card
Cards like Angelic Intervention only give temporary protection, and others like Argentum Masticore has protection from narrow subsets of cards
Game Changers should generally be cards that easily and dramatically warp Commander games, allowing players to run away with resources, shift games in ways that many players find unpleasant, block people from playing, efficiently search for any of their strongest cards without downside, or have commanders that are highly unfun in casual games
You can even take them to your local Lorcana League but check our upgrade suggestions first for a little more power