I was playing Scholar and three other heroes tonight. (Eternal Haka, Redeemer Fanatic, AZ in the Final Wasteland vs Miss Information, though those decks aren't relevant to my story.)
The other heroes were all incapacitated and could collectively give The Scholar two out of turn card plays and one out of turn power use.
Scholar had one Iron, two Energies, and one Water form in play, as well as Bring What You Need, which gives Scholar the power to reveal three cards and put two in his hand.
So, in a given round, Scholar wanted to discard four cards to keep his four form cards in play and ALSO wanted to play three more cards -- one each on his turn and two incapacitated heroes' turns. To keep that up, Scholar needed to be able to draw, on average, at least seven cards a turn.
On Scholar's turn, he could draw two cards from Bring What You Need and draw a third card during the Draw phase. Scholar could also draw a fourth and fifth card via on off-turn use of Bring What You Need. That left Scholar just two draws a round short, on average.
So, over five rounds, on average, Scholar would be ten cards short. Scholar has a card, though, that gives five card draws, so I found myself wondering what are the odds that he would be able to play just that card enough times to get all the card draws needed.
Assuming Scholar succeeded in drawing seven cards a round, then over five rounds Scholar would draw thirty-five cards. Since there are forty cards in a deck and in this Scenario Scholar has five cards in play (Four forms and Bring What You Need), it seems like Scholar will see every other card in the deck. Since the deck includes at least two copies of the card that gives five card draws, this seems doable. Once you get this engine going, if it's not disturbed from the outside (by something like Miss Information forcing Scholar to either destroy all cards in play or discard all cards in hand), it seems like it would go indefinitely.
Even if it _is_ disturbed, in a lot of cases if Scholar is planning for such a situation, the engine can likely get going again in a round or two.