mtg yawgmoth card Demon [Chronicles] Put one into your hand and exile the rest. Yawgmoth's Vile Offering (Foil) –

If you somehow control two copies of Katara, the Fearless, an Ally's triggered ability will trigger three times, not four

Such a list of cards will never be complete, and many cards are only a problem depending on the cards around them

Speaking of white removal, we did get a better example in todays MTG Final Fantasy leaks

For less flexibility (Ancient Grudge, Ray of Revelation, Divine Offering) you tend to get card advantage or some other upside

An indestructible 6/5 enchantment creature for four mana, Purphoros only counts as a creature if its controller's devotion to red is five or greater, making it a headache to remove from play

I had been working on a list of potential four-color deck themes for years, so I felt like we had a good head start on building some decks