Secundus of Two Souls

As an additional cost to cast Secundus of Two Souls, exile two creatures you control.
Secundus's power and toughness is equal to the combined total mana cost of the cards exiled to play it.
{3}{w}{w}{b}{b}, {t}: Exile two target creatures. Create an X/X black Horror creature token, where X is the exiled cards' total converted mana cost.
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Create a non-changeling creature with three or more types.