Mulligans
Edwin and the Questing Adventurer are not the only win conditions. You will win many games through the Togwaddle spells, to a lesser extent the games will be won by damage on the board or even with various tech cards inserted inside the deck.
This means that it is not necessary to play only for Edwin, but you will prefer stopping aggro also wasting resources without worrying.
Against control there is no problem because you can usually win by value.
I hope you like the deck.