Even if you revive it as it is, you can't stop the attack and you will leave the end phase, so even if you use it properly, it will only be a wall
German Astralbarriere Falls ein Monster deines Gegners ein Monster angreift, das du kontrollierst: Du kannst den Angriff stattdessen zu einem direkten Angriff machen
Any changes can be made to the Deck between Duels of a Match, including the following: Adding Cards Subtracting Cards The Deck must be legal for play (appropriate number of cards in the Main and Side Deck, complies with the Forbidden and Limited list available within the MASTER DUEL app)
There are even variants of the Polymerization spell card itself, such as Super Polymerization which allows a player to use an opponents monster as a Fusion material
A card showing "+2000" in the corner is a 2000 counter
Mizzixs Mastery Mizzix's Mastery first appeared in Commander 2015 , but it came back in Strixhaven Mystical Archive