If you play him on turn two, you are going to need at least three activations (barring things like Satyr Wayfinder) to turn him into Jace, Telepath Unbound
Rhystic Study From here on out are bombs and multiplayer/Commander Classics
For one white mana, tap five untapped attacking creatures you control named Templar Knight: Search your library for a legendary artifact card, put it onto the battlefield, then shuffle
With a little creative deckbuilding, players could run a green-blue-red deck that also utilizes Balthier and Frans card, which not only grants your vehicles +1/+1, vigilance, and reach, but might also give you an additional combat phase after attacking with a Vehicle they crewed
This is especially true in metas, where you deal with many blue decks and makes the card a sideboard favorite in many formats