That being said, drawing and discarding is still a useful effect, as you can continually search for the cards you need while discarding the ones you dont
Each time you draw a card, you put a loyalty counter on it, and the tokens Teferi creates also get +1/+1 counters
Previously, in cases where a card's mana value differed from the resulting spell, such as with some modal double-faced cards or cards with an Adventure, you could cast a spell with a higher mana value than the exiled card
When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls
The variety of uses is staggering
They are both expensive enough to make the top five, so these are very much a key part of this conversation