While Spinebiter can be a powerful threat, other cards like Blightsteel Colossus or Skithiryx, the Blight Dragon may offer more immediate impact or resilience in certain situations, so the decision to include Spinebiter would depend on the specific goals and synergies of the deck
So along the way we get to keep choosing a new ring bearer, and eventually our ring bearer is legendary, cant be blocked by creatures with greater power, loots on attack, forces blockers to be sacrificed at end of combat and hits all opponents for 3 if it hits a player
WB is a very parasitic A/B archetype, where sometimes you have Student of Ojutai and Ajani`s Pridemate awkwardly being horrible together, while other times you have a Tavern Swindler buying you free dragons with Angelic Accord
Overall, one of the best stax cards (that's to say, effects that slow down your opponents and basically prevent them from doing anything) you can play