It spreads +1/+1 counters around your other legends or those your opponents control, but if one of those buffed-up creatures dies, you draw cards equal to the number of counters it had, though at the cost of 2 life per card
it's whatever you want it to be
Players are each dealt a hand of white cards printed with various hilarious nouns ranging from the seemingly harmless - like gladiatorial combat and Skeletor - to the undeniably problematic, such as beating your wives and altar boys
Also, they make all of your Creatures cost one less to cast for each Creature you control with a 1/+1 counter on it
If you can get a reasonably high storm count going, you can eventually deal 50 to someone
In the "Top Cards" and "High Synergy" sections, you can see the cards that most people are including in their version of that commander's deck, and often these are wincons or other high value cards that will work well with your strategy