Of course, it does have the big drawback of letting your opponent draw 2, but situationally this isnt the worst see Prince Johns Mirror below
Look at both chosen modes to determine how many targets Cryptic Command has, if any
This card is an iteration of Ragavan, Nimble Pilferer , a legendary creature that, whenever it deals combat damage, creates a treasure token and exiles the top card from your opponent's library, allowing you to play it until the end of your turn
A bit too vulnerable to make than many heavy control decks and lacking in any tempo gaining prowess thus rendering him poor in agro decks the Cryptologist winds up in mindrange decks, combo decks utilizing discard effects and the odd tempo deck that requires bodies to tap for Opposition or put equipment on etc
Provided you can draw a bunch of cards with it, youre essentially doing so for as little as one mana by casting a spell for free from your hand