Master Warcraft

This is one of the best cards for multiplayer games

There is'nt much to say about this card that does'nt become overly obvious upon reading it. This spell rules, there is no downside that I can see, cc looks good, red/white, and it reads like this: tap 4 mana, you win!! 5 stars, this ones here to stay.

You choose which creatures will attack, those creatures controller chooses who they will attack.
You choose how each creature blocks, but all creatures must block something is possible.
Master Warcraft is powerful, but it does not let you dictate the entirety of combat for the turn, and in multiplayer you have far less control over the outcome than in dual player.

Got this card and been using it, much to my friends dislike, in our casual multiplayer games. Very often it acts as a selective boardwipe killing nearly all creatures, except mine :), and shaves a few life points of some opponents to boot! Great Combo with Light Mine Field. Works great in duels as well but there are cheaper cards that can have similar effects such as brave the elements so in those cases 4 mana is a bit too steep.