But creating a Blood token does not count as investigating, and more importantly, sacrificing Blood requires you to also discard a card before you draw
Blue offers to bring a lot more to the archetype with loads of self mill and recursion effects but doing so is a much bigger commitment
Instead, Maralen allows each player to spend their draw step tutoring for any card they want at the expense of 3 life, and that can lead to some interesting twists in gameplay with everyone getting their favorite cards on demand
Hitting creature-lands doesnt matter that much, and using the awaken mode of Planar Outburst was useful sometimes, but gaining a few extra points of life from Fumigate is a really big deal
Heroes of the Realm cards are given to individuals or teams within Wizards of the Coast
Reserve I laughed quite a bit that it became a Mythic Rare