It has a slightly quicker clock than the Sphinx but leaves you a lot more vulnerable while you try to kill them, it is also fairly unplayable for the cost if you are not cheating it into play and so it only ever goes in combo decks unlike the Sphinx which has been run in the odd control build
As a base two-drop 1/1 who gets pumped per turn, its not a head-turner
For example, if a nonlegendary creature that has become legendary (probably because it's a player's Ring-bearer) dies, an ability that triggers when it leaves the battlefield triggers twice
Islandwalk allows her to attack some players directly, otherwise she can be made mobile with enchantments that provide flying ability
Boros struggles largely because it falls behind in two key areas, the first of which is ramp
There are a few draft duds or so-so rares (Oswald Fiddlebender, The Book of Vile Darkness, Minion of the Mighty, Orb of Dragonkind, most of the two-color Classes), but that only makes the absurd impact of Volo, Guide to Monsters, Meteor Swarm or Westgate Regent more important
