Because it isnt guaranteed enchantment removal and there isnt another card that does anything like this, it doesnt have an obvious home
That means you can afford to splash out a little bit more in black for cards that provide options and won't ever be dead weight in hand (obviously once you can cast it, everything with a cost can be dead when you can't pay it...)
The man lands are great mass removal protection, a great way to use spare mana as you approach the midgame and provide a lot of general utility for the deck
Delirium At the beginning of your upkeep, if there are four or more card types among cards in your graveyard, transform this creature
Its still a land.) Illustrated by Wayne Reynolds Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Broadside Barrage is an interesting removal spell for a UR spells-matter control deck, especially given that this set supports the discard theme in these colors