This copy effect ends up being expensive to use in comparison to the other options that this deck has, and was later replaced for cards that create a ton of value with the final gameplan that was landed on
Fury Fury is so strong it got banned in Modern because it offers a good way to wipe a small board or keep bigger creatures at bay
If you do it every game and tutor aggressively to do just that, people will say Oh, thats ALL that deck does and will probably be NOT OK with it
We focus on fast action, clear communication, and long-term protection against future damage
If the target creature's controller has zero cards left in their library when Isolation at Orthanc resolves, that creature becomes the top card of their library
Invasion of Ikoria and Finale of Devastation vied for the final slot too, but ultimately Chords flexibility in finding combo pieces or protection at Instant speed outweighs the overrun and recursion utility of these spells, at least when were talking about whats an essential tool in a players collection