You may sacrifice a nontoken white creature rather than pay this spell’s mana cost.
Until end of turn, your life total can’t change, and permanents you control gain hexproof and indestructible.
Spells and abilities that would normally cause you to gain or lose life still resolve while your life total can't change, but the life-gain or life-loss part simply has no effect.
07-06-2024
wotc
The effect of Flare of Fortitude doesn't prevent damage. Rather, it changes the results of that damage. For example, if a creature with lifelink deals damage to you, you won't lose any life, but its controller will still gain that much life. Similarly, if a creature you control with lifelink deals damage to another player, that player will lose life but you won't gain any life.
07-06-2024
wotc
In a Commander game, the damage dealt to you by commanders will still be counted, even if that damage doesn't cause you to lose life.
07-06-2024
wotc
If an effect says to set your life total to a certain number, that part of the effect won't do anything.
07-06-2024
wotc
Effects that replace an event with having you gain life (like Words of Worship's effect does) or having you lose life will end up replacing the event with nothing.
07-06-2024
wotc
Effects that would replace having you gain life with some other event won't be able to be applied because it's impossible for you to gain life.
07-06-2024
wotc
If a cost would include causing you to gain life, that cost can't be paid. Similarly, you can't pay a cost that includes the payment of any amount of life other than 0 life. However, you can choose to be dealt damage, even though that damage won't result in your life total changing.
07-06-2024
wotc
If an effect would cause you to exchange life totals with another player, the exchange won't happen. Neither player's life total changes.
07-06-2024
wotc
Abilities that trigger whenever damage is dealt to you will still trigger because that damage is still dealt, even though your life total doesn't change as a result.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.