From publisher blurb:
The Universal Adventures Encounter Deck is a set of 54 encounter cards for use with any fantasy adventure game. Each card includes a title, description, and encounter information. From Giant Bats and Rats, to Rock Scorpions and Undead Ogres, the Encounter Deck includes a wide range of opponents for your fantasy adventure games. Also included are encounters with other adventurers and opportunities to launch additional adventures. With the Universal Adventures Encounter Deck, you never need to be unprepared for a gaming session again. Just select the cards you want to include in the upcoming adventure, shuffle the deck, and whenever the characters have an encounter, draw the top card from the Encounter Deck to determine what the encounter is.
The cards can also be used for solo or group games without a Game Master, to fill in the unkeyed areas of a dungeon while you play, to generate wandering monsters and more. Combine the Encounter Deck with the [Universal Adventures Dungeon Deck] and you can create an adventure, complete with encounters, for any fantasy adventure role-playing game, while you play.