I got rid of all my Subterror and Z-ARC URs to exchange for Light and Darkness Dragon. :D
Going first you can set up lvl8 XYZ for negates, maybe Light & Darkness Dragon, and maybe Vanity's Ruler. Shut out opponent from playing.
Going second, clear the enemy board as best you can, shut them out from playing as best you can, and/or go for an OTK with a Horus board.
Volcanic Shell is for discard fodder. If you discard it with King's Sarcophogus live, you can cycle more Shells into the hand for more disccard fodder!
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