This is a nice signpost Uncommon that tells you BW is all about life gain, and its nice that on his own, he can gain you life thanks to lifelink, which means he can draw you cards
Draft only, as even Turbo-Fog Guy doesnt super-want this Fog, and giving your team hexproof isnt the same as making your team indestructible (plus three-cost isnt the same as two-cost)
Cards similar to Clever Concealment include Appeal to Eirdu, Conclave Phalanx, Disruptor of Currents
If you Animate Dead it youll create an infinite loop of your permanents (including lands) being tapped, generating mana, leaving the game, and then returning to play
But in the wider pool of Magic formats, Mortify isn't anything special
Anyway, the key thing is that a new MTG set means a bunch of new cards - and that means it's the perfect time to talk about some of the best Innistrad: Crimson Vow cards that have now been spoiled