Open:
Sage/Death Cart: shuffle
Play:
T3: Hand is: Dthcrt/Sage/Ruin/2C: Sage -> Find nothing -> Dthcrt (trash ruin): Buy Kc : shuffle & draw
T4: Hand is: Dthcrt/Sage/Ruin/Kc/C: Kc -> Sage (find nothing, shuffle, find nothing, shuffle, find nothing) -> Dthcrt (trash ruin) -> buy Bv/Rebuild: Shuffle & draw
T5: Hand is Dthcrt/Sage/Kc/Rebuild/Bv: Kc -> Sage (find nothing, shuffle, find nothing, shuffle, find nothing) -> Rebuild (name Oge, shuffle, find nothing) -> Dthcrt (trash Dthcrt): buy Bv/Procession: shuffle & draw
T6: Hand is Kc/Prssn/Sage/Bv/Bv: Kc -> Prssn -> Bv (draw Rebuild, C, trash Bv, gain Kc) -> Rebuild (name Oge, find nothing, shuffle, find nothing, trash rebuild, gain Bv/Rebuild) -> Bv (shuffle, draw Kc/Bv, trash Bv, gain Kc) -> Bv (draw Rebuild) -> Kc -> Sage (shuffle, draw to last card, draw Kc, shuffle, find nothing, shuffle, find nothing) -> Kc -> Rebuild (name Oge, find nothing, shuffle, find nothing, shuffle, find nothing): shuffle & draw
If I'm counting correctly, that should mean 17 shuffles by the end of turn 6. I strongly suspect that one of the gain all cards by the end of T5 solutions should be able to work without chancellor and then you can get 50 shuffles from mass Prssn -> Rebuild (gain Bv/Graverobber) -> Bv -> Graverobber (gain Rebuild) Kc -> Kc -> Rebuild on T6.
The big cards seem like they will be the multiple plays: Kc, Tr, Band of Misfits, and Prssn, the gainers: Prssn, Bv, Iw, Bridge, and the autoshufflers: Sage (if no card is worth more 3 presently), Inn [Brg -> Iw (gain an Inn & shuffle), Graverobber (gain an Inn) -> Reshuffle] and Rebuild (if there is one one type of VP card in deck - like just OGE or just Estate).