For those of you that haven't played Starcraft 2 in a while, Legacy of the Void brought with it one of the best features Starcraft 2 ever witnessed - challenging co-op missions.

As you might imagine, however, after numerous playthroughs even the most challenging of content tends to become somewhat samey, and worst of all when it comes to having a jolly good time, laughably easy. Thankfully, the upcoming Patch 3.3 is attempting to remedy exactly that issue by providing mutators, a new way to spice up your gameplay. Here's the developer video showcasing some of these mutators in action:

Mutators are small gameplay-altering conditions designed to add complexity to the various co-op missions. They can be either statistical boosts to the enemy (such as double speed), a brand new effect such as the sleepy worker debuff that requires you to constantly watch over your base, invisible enemies, and so forth.

You will be able to either personally apply mutators to your mission in order to achieve the exact level of challenge you're looking for, or just go for the Weekly Challenge that promises a unique and exciting take on the standard missions. One of the given examples was for the Oblivion Express mission where you are required to destroy heavily guarded train convoys.

With the first Weekly Mutator turned on your field of vision will be drastically reduced, and endless hordes of the undead will continuously attempt to chew down your main base while you are preoccupied with the enemy convoys. And if that wasn't enough, each enemy you kill will also spawn undead ghouls, their numbers depending on the health of the deceased unit. Now that sounds like an exciting mission!

As you've most likely noticed, this is Starcraft 2's take on the immensely popular Hearthstone Tavern Brawls, a system that is apparently so effective Blizzard are slowly implementing it across all of their games. Don't take this as a complaint from me though, because mutators are one of my favorite features of the Unreal Tournament series, and any game that decides to add them is instantly a couple of points higher on my imaginary and completely arbitrary list.

There is currently no release date set for Patch 3.3, but given Blizzard's wording throughout the announcement, I would put my chips on "soon". If you're interested in learning more about the whole mutators system, or what rewards you can receive for beating the hardest challenges, head over to the Blizzard blog post.