Most oddly costed counterspells end up disappointing, but I expect this will be an exception
Loads ranked cards from My First Battle
Several cards on the Game Changers list are legendary creatures, including popular commanders like Yuriko, the Tiger's Shadow
There's also some weak cards like Interceptor, Shadow's Hound which is really cool and self-reanimate is thematic, but there's only a single Assassin in the deck (not even a commander) and a 4/3 without evasion is simply not worth getting back anyway
Likewise, if an effect like Elesh Norn, Mother of Machines prevents ETBs from happening, a living weapon equipment will fail to make the creature token, and will sit in play unattached to anything
Turntimber Symbiosis comes into play untapped when needed, further lowering its opportunity cost, and since green decks tend to have big finishers like Craterhoof Behemoth, being able to dig seven cards deep in your deck to find them is quite powerful