I think free spells shouldnt be combo enablers or protection without heavy caveats, and Force of Negation does a great job of being a counterspell thats only free when you use it defensively
Being printed at rare is huge here
For just two mana, Alesha can resurrect a creature from your graveyard with power two or less when she attacks
Except this particular anything #7: Lathnu Hellion A three-mana 4/4 that can attack twice before getting sacrificed is an incredible amount of damage to have pushed through by turn 4, and in multiples the Hellion has closed out games
In Izzet Prowess, it forms an end-game combo with Stormchaser's Talent, locking the opponent out of the game and very slowly beating them to a pulp
There are only a handful of ways to remove specific cards from your opponents deck, most of which are known by the slang term capping or surgical-ing. These come from Jester's Cap and Surgical Extraction, though there are a few other cards that are similar