Alphinaud Leveilleur* 4 Mana for Alphinaud is a lot, given what else you can get in card draw there, and the fact its only on your second spell each turn combined with a poor size make this a creature you probably leave out of your party, unless you are wanting to make use of its partner
It lets you know which profile (including all the various hybrids) you fall into
The amount of satisfaction that I get for correctly guessing a card in the opponents hand is also something that a lot of cards dont offer in Cube, with Cabal Therapy and Meddling Mage being much, much weaker in singleton environments
Cube environments: A full dual land cycle helps drafters build cleaner multicolor decks and makes mana fixing more consistent across archetypes
It is capable of giving decks like Black Rob Lucci, Blue Nami, Blue Doffy, and Purple Luffy a run for their money