Cheapest priced copy (Secret Lair Drop): $9.99 at Card Kingdom, near mint, their price list as of .
Breath of Fury 
Enchantment — Aura · Rare · Secret Lair Drop · #2347
Enchant creature you control
When enchanted creature deals combat damage to a player, sacrifice it and attach this Aura to a creature you control. If you do, untap all creatures you control and after this phase, there is an additional combat phase.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $9.99 to $37.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2016 | 121 | Rare | $12.99 | — |
| Ravnica: City of Guilds | 116 | Rare | $10.99 | $37.99 |
| Secret Lair Drop | 2347 | Rare | $9.99 | $9.99 |
One ruling from Wizards of the Coast
- 1 October 2005If there isn’t a legal creature to attach Breath of Fury to after the enchanted creature is sacrificed, you don’t untap your creatures or get an additional combat phase, and Breath of Fury is put into its owner’s graveyard as a state-based action.