Magic the Gathering MTG Fifth Dawn booster box contains 36 booster packs with 15 cards each. Released in May of 2004, Fifth Dawn is the third set in the Mirrodin block. The set contains 165 black-bordered cards (55 rare, 55 uncommon, and 55 commons). This set is considerably artifact heavy with 65 different artifacts.

Fifth Dawn is a Magic the Gathering set which is the third and final set of the Mirrodin block. However, Fifth Dawn adds a new twist to artifact theme of Mirrodin and Darksteel: it encourages using colored mana for playing artifact spells, via the Sunburst mechanic (see below). Fifth Dawn 's expansion symbol is a small image of Helm of Kaldra, a card from this set.

Fifth Dawn introduced an enhanced design for artifact cards, which uses a darker inner border to help players distinguish artifacts from white cards. Fifth Dawn theme decks contained a few reprints from Mirrodin and Darksteel with the improved card face.

The name Fifth Dawn is derived from the plane's five suns. Each sun is associated with a color of mana and the green sun, which has long been absent, returns to the sky as part of this set's storyline.

Glissa, Bosh, and Slobad journey deep within Mirrodin's core to confront the insidious Memnarch. With them is the Kaldra avatar—an immensely powerful being of energy summoned when Kaldra's sword, shield, and helm were brought together. But what was supposed to be the world's salvation turns out to be a vile trick. With a single spell, Memnarch seizes the avatar and turns it on Glissa and her companions.

Kaldra's avatar relentlessly pursues Glissa into the Tangle, destroying everything in its way. Finally, at the Radix, Glissa's destiny becomes clear. As rage and despair overcome her, Glissa's body calls forth a great column of green mana from Mirrodin's core, annihilating the avatar in the process. Now that mana hangs overhead in a glowing sphere—the green sun at last, Mirrodin's fifth dawn.

• Sunburst - Sunburst appears only on artifact cards. Cards with Sunburst get +1/+1 counters (if the card is a creature) or charge counters (if noncreature) for each color of mana used to pay the artifact's mana cost.
• Scry - "Scry X" means "Look at the top X cards of your library. Put any number of them on the bottom of your library and the rest on top in any order." In Fifth Dawn X was always 2, but in later sets (Future Sight) this mechanic was reprinted with different values.
• The set also focuses on "cogs" (an unofficial term for artifacts which cost 1 or 0 mana).