You do need a lot of sorceries and instants to power the Disciple, and Dig Through Time has some tension with it, but I think this card is one of the more underrated ones in the set and sure to become a popular control option for the next eighteen months (though certainly not universally adopted, as there are some good Walkers and Dragons)
Card Set(s) -3D2Y- [ST-14] CARD VIEW ST14-012 | C | CHARACTER Monkey type Characters gain +1 cost
But casting two Flares together costs mana you dont always have
Ragavan, Nimble Pilferer is so strong that it had to be banned in Legacy, currently terrorizes Modern as part of Boros Energy, and it's very often seen as part of the 99 of top-tier cEDH decks
As you work through the mastery levels, the first 20 levels reward Mastery Orbs
Its best role is as a finisher enabled by ramp and cost reduction or as an outlet for infinite mana