Channel
Sorcery
Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add 
.
To some mages, the meaning of life is less important than how much is left.
Rebecca Guay
Iconic Masters (IMA)
• #157Rulings
Once your life total is 0, you can't pay any more life, even if you've somehow not lost the game yet.
(wotc • 2017-11-17)
Rulings
Once your life total is 0, you can't pay any more life, even if you've somehow not lost the game yet.
(wotc • 2017-11-17)