Duel!

Duel! is an epic paladin spell card, from the Rise of Shadows set.

Strategy
Duel! can be used as a disruption tool to pull an important minion out of your opponent's deck, or as a combo-enabler for yourself. Always be sure you have extra damage or hard removal in case your opponent summons a larger minion than you do. Note that this can potentially cause card disadvantage as you spend a card for minion combat if they trade evenly, but running deathrattle minions such as Plagued Protodrake and Scrapyard Colossus mitigates this risk.

Paladin decks built around Duel! often also run Prismatic Lens and Shadow Hunter Vol'jin to summon expensive minions more efficiently. Note that Shadow Hunter Vol'jin himself may be summoned by Duel! - Call to Adventure may be used to draw him, most often preventing this scenario.

Trivia

 * This is one of the few cards to use non-italicized informal language as part of its ability text. The only other example is Power Overwhelming.

Patch changes

 * Added.