Dragon Liches are powerful towering Bone Dragons. They are melee necromancers that use their necromantic skills to transfer conditions away from themselves, to heal and to dispel opponent enchantments. Their true punch comes from their regular melee attack that does great damage, combined with Deafening Roar which causes the Dazed condition on their foes. This means their following attacks interrupt any spellcasting attempts by that foe.
Dragon Liches are large monsters and, as such, are immune to knockdown.