Invert Polarity Invert Polarity is kind of a messed up card, because the failcase is Cancel, while the upside is a lot like casting a 3-mana Fractured Identity to steal something off the stack
Its good for the floor of uncommon Planeswalkers to be low, since it leaves plenty of room for many gradations of power
If the space two spaces higher than this creature's power on the Monk Track is already occupied (or, in rare cases, if its power is so high that there is no such space), this creature can occupy any lower-valued space on the Monk Track
Pact of Negation Pact of Negation sees a lot of play in Eternal formats because countering a spell for free means you survive a combo that would actually kill you, or protect your own combo from interaction (e.g
He'll let you prevent all damage that would be dealt to a target creature with a +1/+1 counter on it, useful if you've already got Kyler handing out counters like there's no tomorrow
It misses those with vigilance