You can take the counters you got from Fabrication Module, or from one of the triggered conversion of Energy to +1/+1 counters, add a one mana, and come out with a 1/1 artifact creature token
This is both an advantage, since it can attack from many angles, and a disadvantage, since token production, direct damage, and artifact & land destruction push it in different directions
When Rakdos Ringleader does damage to a player he or she is forced to discard a random card
In many ways, this card defines the Modern metagame
Playing an extra land ramps you, and these decks usually have high land counts
The main way to do that is by putting Virtuous role tokens on creatures (they give the enchanted creature +1/+1 for each enchantment you control)