@pugsuperstar the new narset is great in oath as it allows a pseudo dig through time effect whilst slowing Xerox cantrips. You can refer to the narset thread for specific discussion to its benefits.
Potentially it can also diminish the need for playing B and demonic tutor making the mana base a strict RUG.
@chubbyrain I think she further cements the blue/brown dichotomy within vintage in the business as usual post London mulligan meta. Blue cannibalises blue whilst brown (with Karn) cannibalises brown. Of course the secondary effects have impact yet Karn requires a sideboard strategy above the norm.
this card provides for so many interesting interactions between cards that perhaps a list is required.
(as above) Mind's Desire let's you see 'between' the shuffles. Thus you shuffle, exile the top card, then unlike without Bolas' you look at the top card and can play it before the next storm resolves, as long as it is an instant/flash.
A sensei's divining top in play means you can draw any unwanted cards from the top of the library for 1 life. So in theory every land or unplayable/wanted card is a -1 for the next one.
Slow tutors (vampiric-, mystical- tutors and imperial seal) become a 'fast' tutor in certain circumstances.
Lastly, there is a lot of opportunity to brew a non-DPS list, such as Doomsday where a contemporary Doomsday stack could look like:
- Sensei in play + artifact
- Doomsday - 9life (or ...)
*[stack: tinker, bolas', + 2 cards (preordain?) and lab man/new jace
- tinker for bolas
- preordain -1, lab man/jace -3/-4, preordain -1.
Win @ 4 life.
There are also many other options (gush, ancestral etc.)