Although the card has the laziest name (FoW + Pact of Negation) it's a pretty clever design. I like it a lot. Now, this makes Teferi, Time Raveler even better. Being able to combo, Tinker or whatever during your opponents turn and have more ways to protect it seems relevant.
I'm not sure how lazy it is since I believe you got it wrong. The card is Force of Will because of the pitch ability, but also Negate because of the can't counter creatures aspect. If it was based of pact I assume there would be a tax on it but could counter anything.