Elite Fathom B/Y

({p/w} can be payed with {w} or 2 life)
{t}: Add {w/b} to your mana pool
{p/w}{b}{t}: target player takes 9 damage
{x}{p/w}{b}{t}: Summon X 2/2 White "Thunder" Tokens
{x}{p/w}{p/w}{b}{b}{t}: summon X 5/5 Black "Dark" tokens
And the guard was found, and let the titans into the
vault releasing the reason mana is useable, the Elite Fathoms.