As the name implies, this format is what is most up-to-date and used in league tournaments
All those enchantments are important to Eerie cards and ensuring you have enough enchantments or Rooms for Eerie helps drive your draft decisions
Even beyond the cards themselves, MTG players have been free to express their own style with myriad customization options
You need to tap Marshland Bloodcaster and spend two mana to get the ability to work, so you'll have to wait a turn and ensure you have enough life to pay when you cast that next spell
These cards see a lot of play outside of these decks, too, roughly to the same proportions as their costs
Sisay works well as the basis for typal decks, combo decks, attrition strategies, or just high-power five-color 'good-stuff.' It gets truly out of hand once you hit ten mana, after which you can double-tutor every turn and close the game out quickly