mtg commander deck rules Confusion about Magic: The Gathering's format and Edge of Eternities MTG Commander explained: Rules, banned
Description
You could make the argument that MTG cards are so expensive today because they have always been rare

Usually, this two-mana creature goes into decks where most of the cards dont cost that much mana, and where the benefit of having an extra card each turn outweighs the downside of losing life
Plus, the intel that it provides when peeking at your opponents hand makes it already worth so much more
For a deceptively low mana cost, it forces an opponent to discard their entire handan effect so oppressive that Mind Twist has long been restricted or outright banned in various formats