[chrispedersen]

Wyrm, Moloch, Prince of Death, Cyclops, Ghost King, Colossal Fetish, Gaiea, Carrion Dragon, Immortal Oracle, Both Imperial Generals, Both Bulls, Lord of Winter, Virtue, Kraken, varior Rlyeh's, can all be used as SC's. Lord of Desert Plague, the destroyer.

Some others you've left out:

Forge Lord, Immortal Glyph, Blood Fountain, Divine Emperor (CBM only), Oracle, ...