Kalata
Out of the Silent Planet
Brutally good song. This can be said for a few songs: To Tame A Land, Infinite Dreams, Sea Of Madness.
The fact this song hasn't been played since 2010 remains Iron Maiden's biggest crime.
And my personal preferences: Still Life, Long Distance Runner, No Prayer For The Dying, Be Quick Or Be Dead, Wasting Love, Killers, Ghost Of The Navigator, Dream Of Mirrors, Out Of The Silent Planet (it wasn't their original choice for a 2nd single from the album, so maybe that's the reason), Brave New World, Rainmaker, Paschendale, Brighter Than A Thousand Suns (it's not an easy song), Lord Of Light.
From the never played live songs: The Duellists, Deja-Vu, Only The Good Die Young, Judas Be My Guide, Judgement Of Heaven, The Thin Line (although I understand why), Montségur, The Alchemist, Isle Of Avalon, Starblind, Empire Of The Clouds (we know the reason) and I don't want to add a certain song from SJ.