For your investment you get a tap ability to sacrifice an artifact you control with mana value X
It's the price reference for the French-speaking market and, more broadly, the European one, with transactions in euros
Its fascinating that Wizards took two mechanics newer players tend to overvaluemill and lifegainand packed them into one card
In late game, it is extremely effective as well
[casthaven]Gonti, Lord of Luxury[/casthaven] [casthaven]Sen Triplets[/casthaven] get a friend, though the individual card power feels more along the lines of [casthaven]Toshiro Umezawa[/casthaven]
I count 29 cards that are either Phyrexian or make Phyrexians, plus 41 cards that either are artifacts, make artifacts (incubate tokens), or care about artifacts