Against slow and clunky midrange decks, ideally three or more colour ones you can expect the Sundering Titan to be pretty game endingly brutal
That being said, you can allow Acererak's trigger to return it to your hand instead of the command zone and continue to cast it again and again until you complete the dungeon
Since it was only printed in one region of the world, and then was only available to those who bought a box and bothered to mail in for the promos - and on top of that came in one of the three packs that you could get in return - this Mountain and the other APAC lands are considered very rare and valuable
But by bigger, I mean Shanna, Sisays Legacy
Likewise, Mandate of Peace fills not only the role of Fog + Silence, but can stop opponents messing with our first combat, while allowing us to take a second one if weve already attacked with Aurelia