Dwarven Racial Changes

Dwarves of the dwarven homeland Rockhome typically are the Mountain Dwarf subrace and other Dwarves found closer to or amongst non-Dwarven nations, such as the dwarves of Highforge in Free Traldara, typically are of the Hill Dwarf subrace.  Its possible that scattered, remote populations of Mystaran Dwarves could fall into the Duergar subrace.  

Dwarven Resistance (replaces Dwarven Resilience): The Dwarves of Mystara are resistant to magic due to their time spent deep in the earth exposed to the raw magical forces within.  Dwarves add their proficiency bonus to saves against spells and spell effects.

Class Suggestions.  Among Dwarves are typically found Fighters, fighting Clerics and Paladins (particularly of Kagyar), deep Rangers and the occasional Wizard or other spell-casters, including even occasional Druids dedicated to the deep hearts of mountains.  The Artificer Arcane Tradition is popular amongst Dwarven wizards.  Barbarians and Monks are almost never found amongst Dwarves.

Dwarven Racial Changes

Fury of the Immortals DNDENCDM