The people who normally occupy this room need them to do their jobs
If you want to build a strong Mewtwo EX deck, you will only need to spend your daily packs on one type
The best Rise of the Floodborn action cards build on the game-changing abilities introduced in Lorcanas The First Chapter, bringing new ways to mess with your opponents cards, find the cards you need and enhance your characters abilities to send them questing for lore and challenging against rival characters
Exception #3 - Twisted miscuts
Burn spells: Lightning Bolt, Shock, Crackle with Power, etc
The focus on Commander and the need of Universes Beyond sets to capture many iconic characters means that were seeing more legendary creatures than ever before, and that only benefits cards that care about legendary permanents