While this artifact will have little to no effect on a wall-tribal player, as the majority of walls have insignificant power, the card can be quite problematic for one's opponents
Who to Trade With Anybody and anyone willing to trade
(If it annoys you that Pact of Negation can target creature spells when Negate and Force cannot, I sympathize Pact unfortunately predates Negate, which messes up this neat bit of Magic taxonomy.) Force of Negation is effectively a compromise with players who begged for free counterspells to hamper the ultra-aggressive combo decks in Modern
Depending on what is on your board at the time, this can close out an entire game, dealing damage to an opponent by combat to then kill them with Vito, Thorn Of The Dusk Rose's main effect
Have the cards held up in value, or are they declining with age
As long as Group Hug is the intention, and the build around, it's excellent in this way