Making your opponent discard cards, I'm also happy to report, reduces their available options and helps you win the game
Privileged Position Most cards that enable pillow fort strategies are permanents with static or triggered abilities that discourage your opponents from attacking you, so you naturally need cards to protect those permanents from removal
In Sultai colors with Green ramp, this is not a big deal to hit, and you draw a card for each thing destroyed to refill your hand like Decree of Pain
IMG_008819201624 435 KB Heres Mana Vault from Mark Tedin, also a powerful artifact that lets you get 3 mana for 1
(The same is true for card types that don't appear in most games, like plane or scheme.) You can't choose a subtype, such as creature types like Spider or Hero, artifact types like Treasure or Food, or enchantment types like Aura