Defile

Defile is a rare warlock spell card, from the Knights of the Frozen Throne set.

Known bugs

 * When a Scavenging Hyena and one or more other beasts are in play, the Defile effect may trigger one time too often. The reason for this is at this time not known.

Strategy
Defile is a cheap AoE card with very large potential. If the damage kills a minion, it continues to cause damage, potentially causing a huge amount of damage in a single turn if each subsequent activation of its effect also kills a minion. This effect can be strong against Jade Golem decks, where there are many minions on board with ascending Health values. Defile can be used as an additional AoE effect for Control style Warlock decks.

In Arena
Defile is an above average card in Arena. Although similar 1 damage AoE effects, such as Arcane Explosion, are generally considered poor cards, the potential for Defile to continue causing additional damage greatly increases its potential.

Lore
In World of Warcraft, "Defile" is an iconic ability used by the Lich King during his in the  raid. The spell defiles the area under a random target. Anyone who enters the area takes Shadow damage and causes the defiled zone to grow.

In the  expansion, Defile was added as a level 100 for. It works similarly to the Lich King version and replaces the similar death knight ability.

Trivia

 * With the release of Knights of the Frozen Throne, Dreadsteed's Deathrattle was changed to summon the new Dreadsteed at the end of the turn instead of right after the Deathrattle triggered; the original behavior would've caused Defile to recast infinitely. This marked the first time a card in Wild format was changed due to interactions with newly released cards.
 * Despite Dreadsteed being changed specifically to prevent infinite loops, Defile stops recasting after 13 recasts as noted above.

Patch changes

 * Added.