User blog comment:RaijinSenshi19/The Omni Lord Hierarchy/@comment-24653588-20151109124958/@comment-1755882-20151109130756

Drum isn't actually useful in many decks. Miserea outclasses him in general versatility, and what makes Drum strong is how easy it is to protect, search, and revive him in Fifth Omni, making attempts to remove him rather meaningless. He loses that when used as an Omni Lord, making him not really worth as an Omni Lord unless you're using a deck that can self-damage.

Omnidai gives a lot of decks the kind of wall and the kind of monster protection that they completely lack otherwise.