When Teferis Protection resolves, you keep everything while the rest of the table deals with the fallout
Mask of Change has that advantage: its best cards and product identity point in the same direction
If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard
Based on the latest market prices tracked on TCG Stacked, a foil copy of Magister of Worth is worth about $0.33 USD
Since there are no life totals, damage is of no consequence to you, though it still gets rid of creatures
So, I think of Chaos Magic like I would of a recently-purchased used car: New to me. When I first constructed my 9395 Cube (which only uses cards printed during those three years), I was a little dismayed because so many of the games were slow, even boring