Competitive PreDH applies competitive deck building to PreDH, a version of Commander restricted to cards that existed before the release of the first Commander preconstructed decks in 2011. The older card pool changes which engines, commanders, and win conditions are available.
Mana Crypt provides the explosive acceleration expected from a competitive strategy, Demonic Tutor efficiently finds combo pieces or answers, and Survival of the Fittest turns creatures in hand into a flexible toolbox.