Monk is the Class that specialized in unexpected policy decisions or cunning (you can steal keywords from enemy creatures by Ahnassi or give your creatures keyword Lethal by Skooma Racketeer), but disciplined warfare (you can control the board after playing combo Imprison + Imperial Reinforcements). Your play can be based on strategy and plans for many turns because of growthing of the power of your army (Ongoing effect by Divine Fervor, buff from Fifth Legion Trainer after playing another creature) and its quantity (Scouting Patrol or Imperial Reinforcements).
If you chose Agility and Willpower attributes you will play this Class. You’ll be able to combine unique Summon and Last Gasp bonus effects and strong actions which will upgrade the power of your army. You can play Deshaan Avenger or Tazkad the Packmaster to gain a foothold on the board because your opponent must spend a lot of resources to destroy this creatures and the tokens from their Last Gasp effect. And of course you can trigger all Last Gasp effects by Necrom Mastermind. Master of Thieves will give your creatures with Pilfer a chance to do the extra attack every turn. You will also have good Support (Thieves’ Den to upgrade your Pilfer creatures or Divine Fervor to upgrade the power of your army) and Items (Dawnbreaker or Snake tooth Necklace for your army.
You can play Midrange decks when you use the cards of this Class. For example:
In this deck you can see mostly 3, 4 and 5 magicka cost creatures that is the feature of Midrange decks. You can see some cards that have drawing effect to circle your deck (Eastmarch Crusader). There is a good tempo card Ungolim the Listener. There are also creatures with Drain effect (Pillaging Tribune and Quin’rawl Burglar) and one of them has also keyword Prophecy (Moonlight Werebat). Ongoing effect by Divine Fervor will buff the power of your army. You will summon a lot of creatures and then give them buff. It is the power of Token Midrange decks. You can also control the board playing combo Imprison + Imperial Reinforcements. You can also steal keywords from enemy creatures by Ahnassi.
You can also build an aggro Monk decks.
There are a lot of cheap creatures in this deck They are mostly 1, 2 and 3 magicka cost creatures. You will just buff those creatures by Ongoing effect of Divine Fervor.
Aggro Monk decks are not very good.
You can also build Control decks when you play this class. For example:
There are some powerful AOEs (Dawn’s Wrath or Immolating Blast) which help you to control the board. Also there are strong cards with Prophecy like Piercing Javelin,which can destroy opponent’s creature, or Healing Potion, which can Heal yourself. There is also one strong Legendary card for Control decks. It is Miraak, Dragonborn, which can turn the game after stealing opponent’s creature. Also there are a lot of cards with Prophecy, Guard and Drain. Also there are 3 copy of Mantikora. It is great to control the board.
On Arena this class is good.But you must follow magicka curve and potential synergy between cards.