Weve only seen a little bit of Foundations so far, but weve already seen some cards that have been core set all-stars like Llanowar Elves and Day of Judgment
Teferi, Master of Time I typically avoid planeswalker ults on lists like this because achieving them is incredibly inconsistent, but Teferi, Master of Times static ability makes it much more reliable than most and all the card filtering helps sculpt the perfect hand for those two extra turns
As Im writing this piece, 4/8 decks in the last MTGO PTQ were almost the same 75 of Grixis Shadow A true proof of how good this card is in the right deck
However, its not one that anyone should recommend - and we certainly dont - because the cost of it is so incredibly high
I've seen people just decide not to cast their second Swords to Plowshares because they had one in the graveyard already
Disclaimer: I am not a competitive Lorcana player