Showstopper

Showstopper is a common neutral minion card, from the Madness at the Darkmoon Faire set.

Strategy
Showstopper in unique in that it offers a cheap, neutral, board-wide Silence option, though its effect is delayed due to being tied to a Deathrattle rather than a Battlecry. Animated Broomstick and similar cards that allow it to attack immediately can offset the delay, as can cards that destroy friendly minions as a cost (such as EVIL Genius). Be wary, however, that you don't dispel any important abilities on your own minions, as the Silence effect is symmetrical.

This card is best used in decks that want to Silence their own minions, with Silence Priest being the most notable example. These decks run minions like Ancient Watcher, Arcane Watcher, and Eerie Statue: high-statted minions whose massive downsides are removed by Showstopper's Deathrattle. Though this card is generally worse than Dalaran Librarian in such decks, it does have the benefit that you can play it before dropping your Silence targets, then trade it into an enemy minion next turn if it's lucky enough to survive until then. It also clears out any Taunts your opponent might have when you do so, allowing your bigger minions to ignore them and attack the enemy hero.

Patch changes

 * Added.