In a regular Limited environment, focusing your picks around a gold card is exactly what you shouldnt do
Typically even when it is good it is just buying you a bit of time, you still need to find or use other things in order to not just die
While both his name and his abilities suggest a political or pillow fort strategy, in practice, Mangara doesnt stop your opponents from dogpiling on you after youve drawn one too many extra cards
No game effects can override this rule
Base Set First Edition Holo Mewtwo For a certain generation of Pokmon fans, Mewtwo is the rare Pokmon, the rightful recipient of their Master Ball for (I probably threw mine at the first elemental bird I came across)
Similarly, if a card became problematic over time, it could be moved to the Game Changer list, then re-evaluated for banning from there