Check out the latest video to come from 343 Industries and Creative Assembly, as they discuss the multiplayer modes available in the up and coming Halo Wars 2 along with a new style of gameplay called Blitz.
As you can see from the video, Blitz is a mix between real time strategy and a card based game. Players get to create a deck of 12 cards based on their chosen Commander, deploying these cards onto the battlefield in real-time during the match. As like other card based games, every card/unit carries an energy cost, the more powerful the unit the higher the cost to play it. Strategy will play key as in the heat of a battle do you spend your energy points on smaller units to build up your forces or save your energy so you can deploy Wraiths or Warthogs. Only you can make these decisions.
Blitz mode will come in two variations, Firefight and PvP. Firefight will be a PVE mode that can either be played by yourself or with up to two other friends against wave after wave of increasingly difficult enemies. PvP will come in its normal fashion of ranked and unranked matches of 1v1, 2v2 or 3v3.