I wanted to highlight and start some discussion regarding some of the new cards spoiled today in WAR.
This is a link to some of the more interesting cards spoiled today: https://www.reddit.com/r/magicTCG/comments/b7r5u4/potential_spoilers_for_war/
In the comments there are people typing out what they think the cards will be.
I believe that of the cards spoiled above their are two that are potentially interesting to Vintage.
Teferi, Time Raveler (1)WU (Starting loyalty 4)
Each opponent can cast spells only at any time they could cast a sorcery
+1 Until your next turn, cast sorceries as if they had flash
-3 Return up to one target artifact, creature or enchantment to its owner's hand, draw a card.
This card seems really good in Xerox or blue mirrors and can provide some incredible tempo advantages or strategic advantages if needed. The plus allows you to surprise or overpower your opponent with some optimally timed instant-speed sorcery. The minus can allow you to temporarily get rid of any non-land or planes-walker permanent, potentially providing you with a huge tempo boost or open up the window to execute a large strategic objective. Additionally the passive ability seems ridiculous at being able to protect your spells from resolving. I estimate that this may be what people wanted Lavinia to be and will likely be adopted by all UWx decks. PO and Jeskai Xerox both seem like the decks that can use this card best in the current metagame.
Karn, the Great Creator (4) (Starting loyalty 5)
Artifact abilities of artifacts your opponents control can't be activated
+1 Until your next turn, up to one target noncreature artifact become an artifact with power and toughness equal to the amount of artifacts equal to their converted mana cost
-2 You may choose an artifact card you own from outside the game or in exile, reveal that card and add it to your hand
This card seems much harder to evaluate than Teferi. While he is a Nullrod that does something the somethings it does are not particularly amazing. I could see the minus being of use in game 1 against something like Dredge to get a Crypt or Cage. The plus could be interesting since it allows you to blow up one of your opponents moxen each turn, just like the original Karn did.
Finally there is one more card that I think may be worth discussing:
Now, I think this card is a little to expensive to be seriously played in Vintage at (4)UB but some of the text is very interesting. The passive ability for this planes-walker is rather interesting, but it does not seem to slot into any current shell for Vintage. I think this would be played in some sort of PO build, as the plus can be an extremely quick clock and alternate win-condition. The minus 3 seems a little lackluster, but could excellent for returning Lotus for extra mana, or returning some part of the Time-Vault combo, allowing you to execute it after a part of it being countered or destroyed. The minus 8 will likely never be done in Vintage unless the player knows that Blightsteel or some other Tinker target is in the top 10 cards.
What are your guys' thoughts? I am excited for the new possibilities all new cards and sets provide and hope that we get at least a few Vintage playable cards!