Here is a reading of his description of his first sight of the bats and the big cave: "I thought it was a volcano, but then,I'd never seen a volcano nor never before had I seen bats swarm, for that matter.
VOA: special.2009.12.07
Battalion necessitates having a significant board presence as soon as possible, and Boros utilizes haste, high power, and swarm opportunities to overwhelm an opponent before they can come online or break through defenses to get the final points of damage through.
The game is fun in its own right, and hopefully the Heart of the Swarm expansion will be no different, but we have many years before games look as good as this cinematic opener.