First was the renown number
Thirst for Meaning could also sneak into enchantment-heavy Standard builds (like Bant), but I would be most excited to see what this opens up in Pauper, where its rate is competitive and enchantments are underutilized
(The expected value of your low roll is the dice size minus the high roll EV plus 1, so 1.875 in the case of two d4s.) For the d8s used on Arcane Endeavor, the expected value of your high roll is 5.8125, which means that if you prioritize drawing cards, youll be drawing about six cards on average, and getting to cast a spell of about mana value 3
Notables are Shambling Vent, Warden of the First Tree, Catacomb Sifter, and Mantis Rider
Kardur, Doomscourge Kardur, Doomscourge is the ultimate instigator
What sets these decks apart from the idea of a theft effect, though, is that they are either casting opponents spells, or copying permanents in play