Delirium Unholy Heat deals 6 damage instead if there are four or more card types among cards in your graveyard
Let's say that when Greed is bought out, not only are all of the copies on TCGplayer purchased, but so are all of the copies on ChannelFireball and Card Kingdom as well (which isn't all that uncommon, especially for old, low-supply cards that don't have much supply on the market to begin with)
This is a gross simplification, but if someone cant tell that a card is misprinted at a glance, theres not much appeal to it
What are your thoughts on classes
One Rare will always match the color theme
Brisela, Voice of Nightmares ( Eldritch Moon ) Theres only one thing gnarlier than a Phyrexian Angel Horror, and thats an Eldrazi Angel