It just makes a lot more sense to curve out with Blazing Bomb, Sahagin, The Emperor, Ultros and Shantotto, THEN start chaining together copies of Retrieve the Esper, rather than trying to play noncreature spells the whole game
In most cases, this is only going to make one or two tokens a game, those tokens are going to spend their time eating chump blockers until someone wipes the board, and youll be left disappointed
As a further commitment to the bit, Wizards is releasing three LOTR -ified versions of the famous card Sol Ring (yknow, because the whole thing is about rings )
Flying, lifelink Your opponents cant cast spells during your turn
Blue has the greatest ability to control which cards it draws, seeing more of the deck in an average game
The only reason I think this wont see as much play as the angel is that this effect is more efficiently done by other cards