@hierarchnoble I have played with dack fayden a bunch and I think a list mimicking Titan Oath and running some Deep Analysis as another pitchable spell that can refill the hand might work. Maybe in place of a bob or two tho I did not try dack with Bob's In the same list.
Md dack was almost always a nice draw vs a shops as my list had 4 Bop so making the missing red or blue was easier. Vs outcome if you could t2 steal a mana crypt/vault or sol ring that usually bought you a turn and makes casting hollow one easier in the later turns.
Edit: Also plays very nice with mb Leo. Having a survival countered but being able to have a back up soft lock came in handy a few times.