Sure, you can screw them up, but then they are the first one to recover from it
Roughshod Duo enables both aggressive raccoon and mice decks, for example, while Lightshell Duo fills the graveyard for rat decks and plays well with the spells otter decks depend on
Most creatures are cheap but the deck only really takes off with 4 mana to play Sigil Captain, which is a bit awkward at this point
He sure is a knight that can buff his allies when he's attacking
Its still used that way in Premodern, Vintage, and Legacy, adding spice like Kalastria Healer or Spike Feeder of all things in some builds, and looking to infinitely bounce your creatures for Grapeshot in others
The first, and most powerful, is playing them in a Hazezon, Shaper of Sand Commander deck