Wildcards are cards that can pretty much change the way your class is. They add cool things to your class, but at the expence of a slot. The following are all the wildcards in the game.

Overkill

In-game Notes : Take a Primary weapon in your Secondary weapon slot.

Personal opinion : This Wildcard is nice when you take a weapon like a sniper. Bring in an SMG in case your enemies get close to you, or a Shotgun with your Assault Rifle (MW2 style). Many combinations.

Primary Gunfighter

In-game Notes : Take a third Primary attachment.

Personal opinion : If you like attachments, this one is for you. You get to take a third attachment for your primary weapon (HBRa3 + RDS + Grip + Silencer is a killer combo).

Secondary Gunfighter

In-game Notes : Take a second Secondary attachment.

Personal opinion : Take two attachments for your pistols. I personally barely use secondaries so this Wildcard is useless to me.

Perk 1 Greed

In-game Notes : Take a second Perk 1.

Personal opinion : This allows you to take a second Perk 1. I use this with almost all my classes (Lightweight to run fast and Low Profile to keep it that way).

Perk 2 Greed

In-game Notes : Take a second Perk 2.

Personal opinion : This allows you to take a second Perk 2. Gung-Ho and Fast Hands is pretty nice to have with a speed class.

Perk 3 Greed

In-game Notes : Take a second Perk 3.

Personal opinion : This allows you to take a second Perk 3. I use this with almost all my classes (Hard Wired to evade those annoying System Hacks and Blast Suppressor to boost up to my heart’s content).

Tactician

In-game Notes : Take an Exo Ability in your Exo Launcher slot.

Personal opinion : Removes your Exo Launcher and puts in an Exo Ability. In a class where the Exo Abilities have an important role, this one is really good. Otherwise there are better things to use.

Bombardier

In-game Notes : Take an Exo Launcher in your Exo Ability slot.

Personal opinion : The opposite of Tactician, this removes your Exo Ability to put you an extra Exo Launcher. This makes the game feel a little bit more like previous CoDs.

Streaker

In-game Notes : Take a fourth Scorestreak.

Personal opinion : This is for those who like to use Scorestreaks. You can take up to 4 scorestreaks with this one equipped, so that’s a really good loadout when you get all the kills.