It gives all your creatures fabricate, which lets you choose between pumping them up or creating Servo tokens every time something new enters the battlefield
Not only can this card Investigate a ton (2-3 Clues on average per attack), but it also offers some mild card advantage for every player
Each saga has its benefits, so find the right mix to replicate sagas to your hearts content
Underdark Rift is a Land with dice roll synergy, as by paying , and exiling it, it let us roll a d10 at sorcery speed, to put target artifact, creature, or planeswalker into its owners library just beneath the top X cards of that library, where X is the result
Of all the cards on this list that could have potential in formats other than Commander, I think V.A.T.S
While Belle is a major payoff, shes also an integral part of sapphires ramp strategy allowing you to play an additional card from your hand into your inkwell once per turn