You can't Miracle Ticket a 140% Eidolon. The OLD P2W Eidolons will be available for 100 bucks.
I think that it is separate from the normal Miracle Ticket that will allow you to get Limited Hime.In Dark? Certainly not. Dark is the land of -25% Def Hime.
Satan Awakened: -25% Def (partially A debuff, partially Res Down)
Samael: -25% Def (Res Down, short duration)
SSR Amon: -25% Def (C)
Thanatos Awakened (End of March): -25% Def (C)
Hercules: -25% Def (Eidolon frame, burst effect)
So, pick any two compatible ones and you're done.
That said, Dark Amaterasu is still great. Because there's no competing B debuffs in Dark (plus Sniper Shot sucks ASS in hitrate), and BP is SUPER IMPORTANT for Hagith.