Enchantment artifacts, enchantment creatures, artifact lands, and so on
Black decks in particular take full advantage of creatures with top tier creature recursion and sacrifice value (Butcher of Malakir)
The only problem was both cards kind of stunk for two of the most iconic D&D beasties in history
Heliod, Sun-Crowned (Theros Beyond Death) This has made waves in a few formats now, owing to his ability to combo with Walking Ballista and win the game
Vadrik, Astral Archmage Day Or Night, Vadrik Slaps Vadrik, Astral Archmage is a potent option for a commander, allowing you to greatly reduce the costs of your instants and sorceries
The card I most accurately predicted was Clive, Ifrit's Dominant, when I initially covered Magic: The Gathering 's PAX East event before it happened