It combines aggressive creatures with spells that generate tokens and removal
Now, Walls generally have the Defender keyword, and the old ones have had it stuck on with errata
There are beautifully dark cards such Toxrill, the Corrosive (Showcase) or Olivia, Crimson Bride (Showcase) that make this set wonderful no matter what you pull
Faeburrow Elder not only taps for 1 mana of each color among permanents you control, but it also grows larger with every color represented, so its both a ramp engine and a solid body
Cards that discriminate against creatures that dont wear hats, however, are a completely different thing
Starn has a static ability that reads "Whenever another source you control deals exactly 1 damage to a permanent or player, Ghyrson Starn, Kelermorph deals 2 damage to that permanent or player"