Ive even seen an Obeka, Splitter of Seconds deck that runs the shrines that trigger during your upkeep, but shrines feel like a secondary part of the upkeep trigger strategy rather than a focal point of the deck
This card, despite what you might expect, is actually a Green instant that costs one mana
But with it, it's a powerhouse
BPhillipYork: Weird card, there are weird ways to lock this out and make it a fairly decent asymmetric card where your opponents don't get to cast it (stuff like Grand Abolisher means they don't get to cast it, or other stax pieces.) I don't know if this is intentional but I think they cleverly exempted Enchantments because sagas are history
Faerie Mastermind As far as punishing your opponents for drawing cards goes, Faerie Mastermind isnt Sheoldred, the Apocalypse or Orcish Bowmasters