Triomes are obviously the best example here for a three color deck they are the defacto best Fetchland target on T1 and on off turns, and later in the game they can be cycled
Crew 2 , Discard a card: Return this card from your graveyard to the battlefield with a finality counter on it
While having Tergrid, God of Fright on the field makes them more powerful, its still helpful to force your opponents to discard or sacrifice their cards
Sauron, the Lidless Eye Sauron, the Lidless Eye has a good ETB effect and a nice mana sink that can drain a lot of life from your opponents in the right circumstances
You can see the decks' MTG commanders below, but first here's an overview: Terra, Herald of Hope leads the graveyard deck Revival Trance that can quickly assemble a large horde of low-power creatures, perhaps for some aristocrats shenanigans
Oh, you can also drop this to fizzle an aura or anything the Nadu, Winged Wisdom deck is trying to do