If a card is worth casting, its worth casting more than once and Mizzixs Mastery offers you the option to either cast your best instant or sorcery twice per game, or recast your entire graveyards worth for 8 mana
Even if this happens and Phyrexian Censor gets removed, you can still celebrate there being one less piece of removal
FromTheShire: In an average deck I think I'm likely sticking with Sun Titan due to the ETB, slightly larger body and vigilance, and sheer inertia
Ive played this card a lot in cEDH, and its a game-defining piece in any pod it comes down in
As much as I like the cards and concepts here, it is below average for Commander
This innovation led to the next, which was the idea that the cards would visually be combined