Thankfully, the card only lasted a few months before it was banned, with Wizards promising to use the lessons learned by Nadu to hopefully avoid making the same mistake in the future
Phyrexian mana can be identified by it replacing the usual mana symbols with the Phyrexian emblem (a circle with a line cutting vertically through it)
Yet again, as a reprint-only product, it does not introduce brand new cards or mechanics
Your cards will be safe from harmful chemicals that can damage them in the long run, so collectors and competitive players can have peace of mind
It's certainly a powerful spell if you have other ways of dealing your opponents mill, or as I like to call it, "deck damage." You can pair this with cards like Deadly Cover-Up and Space-Time Anomaly, assuming you can survive to those turns in the game
The black staple sees play wherever its legal, and this is a premium version of an otherwise $5-9 card