The spell Crown of Glory, in its first iteration in BoED, had M/DF in its component line, requiring a costly component, with a pretty precise description of how it is used, only if it was cast as an arcane spell. However, the spell only appears on two specific cleric domains, and on no other spell list, which, barring Arcane Disciple, Planar Touchstone or domain draught (which are options which didn't even exist at the time), means that almost half of the spell's text had absolutely no effect.