Phyrexian Unlife
You don't lose the game for having 0 or less life. As long as you have 0 or less life, all damage is dealt to you as though its source had infect. (Damage is dealt to you in the form of poison counters.)
Rulings (4)
Jun 1, 2011 · If you’re at 0 or less life and Phyrexian Unlife leaves the battlefield, you’ll lose the game (unless some other effect is keeping you from losing).
Jun 1, 2011 · You can still lose the game for other reasons, including having ten or more poison counters or drawing a card from a library with no cards in it.
Jun 1, 2011 · If you’re at 0 or less life, you can’t pay any amount of life except 0.
Jun 1, 2011 · Phyrexian Unlife won’t affect damage that reduces your life total from a positive number to 0 or less. For example, if you’re at 3 life and are dealt 5 damage, you’ll end up at -2 life. The next time you’re dealt damage, it will be dealt as though its source had infect.
Where it’s played now
Inclusion by archetype · Modern
| Archetype | Format | Inclusion | Copies | Decks (n) |
|---|---|---|---|---|
| Azorius Control | Modern | 0.9% | 1× | 115 |