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
This is part of the reason Saw in Half was a perfect inclusion in the Bloomburrow Squirrel Away Commander deck featuring Hazel of the Rootbloom at the helm
With that said, if you do get full copies of Path, it's worth considering pointing all of them at your own creatures, now that the board is mostly empty, just to get the mana advantage on the table
The exact details and contents are lost from my memory, and so are most of the cards I opened
Its other removal spells are more conditional, but still excellent choices for most decks
A creature with a shield counter on it may still be destroyed by state-based actions if it has damage marked on it equal to its toughness or has been dealt unpreventable damage by a source with deathtouch