Stronghold

Stronghold is the thirteenth Magic expansion and was released in March 1998 as the second set and first small expansion in the Tempest block.

Set details
Stronghold contains 143 black-bordered cards (44 rare, 44 uncommon, and 55 commons). It was released in March 1998. Its expansion symbol is the closed portcullis of Volrath's stronghold. Stronghold was the last set in which multicolored cards appeared until the 2000 expansion Invasion. The biggest impact of Stronghold was its Walls. Wall had traditionally been shunned by tournament players, but the  Stronghold Walls were strong enough for tournament decks. Wall of Blossoms in particular became a core part of many decks.

Marketing
The cards were sold in 15-card boosters which had artwork from Warrior Angel. The Tempest preconstructed theme decks had turned out to be very popular, so WotC made more for Stronghold. Because Stronghold wasn't a "standalone" set, these decks contained both Tempest and Stronghold cards. Such decks continued to be very popular, and demand exceeded supply: Wizards had again underestimated their popularity. The prerelease card for Stronghold was a non-foil Revenant.

Storyline
Gerrard and the crew of the Weatherlight journey through the bowels of Volrath's Stronghold, battling the twisted creations of Volrath's evil mind in an attempt to rescue their imprisoned comrades. The stronghold yields many dark secrets about the crew's friends, enemies, and themselves.

Magic online
On 13 April 2009 Stronghold was released on Magic Online. It went off sale on 27 April 2009, but was available again for the release of Exodus on 7 December 2009. Part of the cards was released in the 2015 Tempest Remastered set.

Mechanics and abilities
The block mechanics buyback and shadow are expanded upon in this set.

The ability associated with the en-Kor, based on the defunct ability banding, is introduced in this set. The abilities associated with Slivers, Licids, Flowstone, and especially Spikes are expanded upon in this set.

Creature types
No new creature types are introduced in this expansion.

The following creature types are used in this expansion but also appear in previous sets: Assassin, Basilisk, Beast, Bird, Cleric, Drake, Druid, Elephant, Elf, Fish, Giant, Goblin, Hydra, Illusion, Imp, Insect, Licid, Minion, Phoenix, Rat, Shapeshifter, Skeleton, Sliver, Soldier, Spike, Spirit, Thrull,  Vampire, Wizard, Wall.

Cycles
Stronghold has three cycles:

Theme decks
The pre-constructed theme decks are:

Notable cards

 * Mox Diamond - This rare artifact requires a land card to be discarded as an additional cost, thereafter it produces a mana of any color.
 * Sliver Queen - The Queen is a 7/7 Sliver which produces sliver tokens. It's casting cost of 1 of each colored mana is often referred to as "WUBRG" {pronounced woo-berg}.  Stronghold was the first set to feature a five-colored card.

Reprinted cards
The following cards have been reprinted.
 * Cloud Spirit was last seen in Portal.
 * Craven Giant was last seen in Portal.
 * Serpent Warrior was last seen in Portal.
 * Spined Wurm</c> was last seen in Portal.
 * Tidal Surge</c> was last seen in Portal.
 * Venerable Monk</c> was last seen in Portal.

Trivia

 * The brother and mother of artist Dan Frazier posed as Eladamri and the Oracle en-Vec on Awakening</c>.