There are currently 4 decks that you can get from the Darkmoon Faire for level 80's.
Darkmoon Card: Berserker!
Darkmoon Card: Illusion
Darkmoon Card: Death
The fourth card has 4 different versions, they have the same proc ability but the stat bonus is different:
Darkmoon Card; Greatness (90 Agi)
Darkmoon Card: Greatness (90 Str)
Darkmoon Card: Greatness (90 Spi)
Darkmoon Card: Greatness (90 Int)
Quest
Darkmoon Prisms Deck
Quest facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
With a 5 Minute cooldown means that this has an effective Mp5 of 20. This is on par in terms of MP5 to the Memento of Tyrande with 38 more Spell power.
You can combine the cards to create the Prisms Deck, which will start the quest that takes you to the Darkmoon Faire to receive your trinket. The method to create the card is through the Inscription spell Darkmoon Card of the North http://www.wowhead.com/?item=44318. Each time you cast that spell, you have a random chance to create an Ace through 8 of either the Nobles, Prisms, Undeath or Chaos. Hope that answers your question. Edited fur da gud spellin.
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(13324))
Description
Now that you have gathered all of the Prism cards together into a deck, a ninth card mysteriously appears with the same backing as the first eight. On this card is inscribed, "Return these cards to the Darkmoon Faire and be rewarded." You have heard that the entrance to this faire appears near Mulgore and Goldshire every month.
Community notes from Wowhead · 17 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
The top 3 are shown in Top Comments above. Read all 17 on Wowhead.
Reward details
Items you receive
Reputation: Darkmoon Faire +350
A carnival that showcases the weird and the extraordinary, located on a mysterious island only accessible for the first week of every month.
Reputation group: Classic.
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.