Flare of Fortitude is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
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.
Complete guide
Flare of Fortitude is a powerful defensive tool from Modern Horizons 3 that offers a unique alternative cost for proactive protection. It combines life total stability with complete board protection, ensuring your presence remains untouched by most conventional threats.
A Shield for Your Soul and Steel
Flare of Fortitude provides a triple layer of defense. First, it prevents your life total from moving in either direction. Second, it grants every permanent you control—including lands and planeswalkers—hexproof, meaning they cannot be targeted by your opponents. Finally, it gives those same permanents indestructible, protecting them from 'destroy' effects and lethal combat damage.
Alternative Costs and Timing
You can cast this spell for its mana cost of two white and two generic mana, or you can sacrifice a nontoken white creature to cast it for free. This sacrifice happens as part of the casting process, not upon resolution. Once the spell resolves, the protection lasts until the end of the current turn. Note that it only applies to permanents you control at the moment the spell resolves; permanents that enter the battlefield later in the turn will not have hexproof or indestructible.
Understanding Life Total Lock
While your life total cannot change, damage is still dealt to you. This means commander damage is still tracked, and creatures with lifelink will still cause their controller to gain life even though your total doesn't drop. However, you cannot pay life for costs (like fetch lands or Phyrexian mana) because your life total is unable to move, making those costs impossible to pay.
Common Misconceptions
A common mistake is thinking Flare of Fortitude prevents damage. It does not; it only changes the result of that damage on your life total. Another mistake is trying to save a creature by sacrificing it to the Flare—since the sacrifice is a cost to cast the spell, the creature is gone before the spell ever reaches the stack or provides protection.
Interaction examples
Generous GiftIf your opponent casts Generous Gift targeting your favorite artifact, you can respond with Flare of Fortitude. Upon resolution, your artifact gains hexproof. When Generous Gift tries to resolve, it checks for a legal target; since the artifact now has hexproof, the target is illegal, and Generous Gift is flicked to the graveyard with no effect.
Teferi's ProtectionWhile both cards prevent your life total from changing, Teferi's Protection phases your permanents out, removing them from the board entirely. Flare of Fortitude keeps them on the battlefield with hexproof and indestructible. This means your creatures can still block for you after Flare of Fortitude resolves, whereas phased-out creatures cannot interact with the game at all.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Flare of Fortitude
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
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.
No other card is named in this ruling.
- #2· Wizards of the Coast
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.
No other card is named in this ruling.
- #3· Wizards of the Coast
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.
No other card is named in this ruling.
- #4· Wizards of the Coast
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.
No other card is named in this ruling.
- #5· Wizards of the Coast
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.
No other card is named in this ruling.
- #6· Wizards of the Coast
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.
No other card is named in this ruling.
- #7· Wizards of the Coast
If an effect says to set your life total to a certain number, that part of the effect won't do anything.
No other card is named in this ruling.
- #8· Wizards of the Coast
If an effect would cause you to exchange life totals with another player, the exchange won't happen. Neither player's life total changes.
No other card is named in this ruling.
- #9· Wizards of the Coast
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.
No other card is named in this ruling.
Popular combos
Real combos played by the community, sorted by popularity.
Ad Nauseam + Flare of Fortitude
- 1Cast Flare of Fortitude by paying
or by sacrificing a nontoken white creature, causing your life total to be unable to change until end of turn. - 2Cast Ad Nauseam by paying
. - 3Resolve Ad Nauseam, revealing the top card of your library, putting that card into your hand and losing no life due to Flare of Fortitude
- 4Repeat the process in step 2 as many times as desired.
Legal formats
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Meta decks with Flare of Fortitude
No archived Top 8 deck with this card yet.