That's because, if you ever do reach a point - perhaps once you're down to a 1 v 1 - where Wall of Shards is doing more for your opponent than for you, Felothar can remove it, and draw you an impressive eight cards in the bargain
In the meantime, well just be wondering what comes next
It is always satisfying to destroy your opponents big creature and then bring it back to the battlefield for yourself
All the same black-white tokens decks I named earlier for Invasion of TolvadaInvasion of Tolvada apply here, too, especially if you can sacrifice a simple Treasure to exile someone else's big creature
Serra became the benevolent planeswalker who once dwelled on this plane (until her boyfriend died, then she ran away to leave the world to be eaten by vampires), and the cards here give a feel for her character: She was a healer, a religious icon, a