-9 _ You get an emblem with "Creatures you control get +3/+0 and are unblockable." August 16, 2013 4:42 p.m
Commander, which is reminiscent of a former game format called Elder Dragon Highlander, or EDH, is a format where players build a 100 card singleton deck, built from the card colors contained within the color identity of the commander of the deck, which must be a legendary creature or one of the special Commander planeswalkers created by Wizards of the Coast
Don't underestimate the ability to buff your opponents creatures when they need it though
Sonic Screwdriver, Psychic Paper, and Rogue's Passage are all ways to accomplish this so your game-enders like Rose Tyler can swing for lethal damage at your opponents
All you have to do is cast spells on your opponents turns, which is what high-level Commander decks want to be doing anyway