Putting it on top also doesnt matter if you cast this before your draw step or play any of the million blue cards that says draw a card. #4
This could be the card that makes Improvise strong, as in Delve strong, but not quite, because Delve did not need much enabling
The versatility it offers of searching up any number of creatures with a total MV of 6 or less makes it shine as one of the best toolbox-openers in the game, grabbing you that Endurance and Reclamation Sage at the same time to permanently shuffle away that damn Sphere of Safety
Rasputin makes for a very interesting flicker commander, as through blinking it and causing it to re-enter the battlefield, its counters are reset, effectively providing a significant mana ramp
While this is a hell of a lot of money to pay, the potential pulls do make it surprisingly worthwhile