The entire proliferate mechanic revolves around adding a counter of a type the card already has, so any card with proliferate will work better than Parallax Inhibitor
The opening experience matters too
This category includes the God-Eternals, the Enduring glimmers from Duskmourn , and the spirit dragons from Kamigawa sets, among others
Decks like Raging Bolt and Gholdengo can make use of this card to get energy back to set up for attacks on the following turn, which helps them maintain consistency after their board is broken
But it is very op, as with it you has 2 Gwenhwyfar per turn, with this card being a plus every turn (its effect is the same as having a continuous RotA which activates from the grave, actually)
Generally, the animation styles of both shows have been pretty much consistent throughout their runs, so it all depends on what you prefer