If you choose two targets for Throw a Line, and one of the creatures is an illegal target as Throw a Line tries to resolve, the original distribution of counters still applies and the counter that would have been put on the illegal target are lost
This first one is taken straight from the cover of 1963's The Amazing Spider-Man #1, complete with artist credits for Jack Kirby and Steve Ditko
The ability to control combat while also cancelling out combat tricks means that your opponents are going to be forced to turn on each other and also be playing combat where all the tricks are on-board tricks
Its fine if you want to fix your colors, but your average 2-color deck doesnt need fixing so badly that itd want to play this
Thematically, Battle for Zendikar was focused on Ulamog, while Oath of the Gatewatch switched attention to Kozilek
Aven Trooper was in an era where Madness was a thing, so its a very, very bad Madness enabler