Quote from Dusk707 »What about an Anticipate effect? Example: envision x (look at the top x cards of your library, put one into your hand and the rest on the bottom of your library in any order). It feels more blue, but black can envision by sacing a creature, paying life, or discarding a card. It provides something both colors do in card selection and can can easily fit on creatures: either as combat damage=envision or blocked=envision.
Creature - Human Monk
When ~ enters the battlefield, envision 2
Seer of the Beyond
Creature - Sphinx
When ~ enters the battlefield or attacks, envision 4
Demonic Mind Games
Sacrifice a creature or discard a card: envision x, where x is the creature’s or discarded card’s converted mana cost
Creature - Human Wizard
Whenever you cast an instant or sorcery you may pay 2 life. If you do, envision 2.
Technically what you're suggesting is an action word, not a keyword. Maybe I'm just being pedantic and an action word fits the bill as well as a keyword does, but I think that this thread is looking more for something a card has rather than something a card does.
As far as the mechanic itself goes, the fact that the mechanic is always better than "draw a card" makes it extremely difficult to balance, considering that you're stapling Sleight of Hand to a bunch of cards. Hell, the most similar creature to the sphinx is friggin' Dragonlord Ojutai, which is an indicator of strong this kind of mechanic is. Not to mention, it's one of those ideas that doesn't fit as well into black.