strixhaven mtg cards Magic: The Gathering Secrets of Commander Deck and magic focus Magic: The Gathering - Secrets

What I would do is run a copy of Demolition Field or Strip Mine to be able to stop the threat

For three mana you can call in another Knight (also with vigilance, notably), and for one mana you can tap some of your other Knights to remove a threat on the board

Carnivorous Canopy is another removal spell thatll help to get fliers, and it can help you to proliferate too

While it reads like a card for tribal decks, and you can play it in tribal decks, I think it will actually be at its best in token strategies, which tend to almost accidentally have a lot of creatures of the same type

The more cards you see from your deck, the better your chances of assembling your doom machine