piano scale
E♭ natural minor
E♭1F2G♭♭3A♭4B♭5C♭♭6D♭♭7
The major scale started from its sixth degree: same seven notes, a different centre of gravity.
The same sounds spelled from the other side are D♯ natural minor.
Written out
Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.
The step pattern
E♭WFHG♭WA♭WB♭HC♭WD♭WE♭
What is true of it
E♭ natural minor is E♭, F, G♭, A♭, B♭, C♭ and D♭, and back to E♭.
Its steps are W – H – W – W – H – W – W, where W is a whole step and H a half.
It costs 6 alterations to write — near the limit of what a key signature can carry.
On the same tonic, E♭ harmonic minor differs from it by exactly one note.
Chords made only of these notes
D♭majorD♭7dominant seventhE♭mminorE♭m7minor seventhFdimdiminishedFm7♭5half-diminished seventhG♭majorG♭maj7major seventh
Found by testing every chord in the catalogue against these 7 sounds, not chosen.