28 cards where the set is “rna” and the colors is W and the number of identity colors is 1 and the cards aren’t reprints

Angelic Exaltation (Ravnica Allegiance #2)
Angel of Grace (Ravnica Allegiance #1)
Archway Angel (Ravnica Allegiance #3)
Arrester's Zeal (Ravnica Allegiance #4)
Bring to Trial (Ravnica Allegiance #5)
Civic Stalwart (Ravnica Allegiance #6)
Expose to Daylight (Ravnica Allegiance #8)
Forbidding Spirit (Ravnica Allegiance #9)
Haazda Officer (Ravnica Allegiance #10)
Hero of Precinct One (Ravnica Allegiance #11)
Impassioned Orator (Ravnica Allegiance #12)
Justiciar's Portal (Ravnica Allegiance #13)
Knight of Sorrows (Ravnica Allegiance #14)
Lumbering Battlement (Ravnica Allegiance #15)
Ministrant of Obligation (Ravnica Allegiance #16)
Prowling Caracal (Ravnica Allegiance #17)
Rally to Battle (Ravnica Allegiance #18)
Resolute Watchdog (Ravnica Allegiance #19)
Sentinel's Mark (Ravnica Allegiance #20)
Sky Tether (Ravnica Allegiance #21)
Smothering Tithe (Ravnica Allegiance #22)
Spirit of the Spires (Ravnica Allegiance #23)
Summary Judgment (Ravnica Allegiance #24)
Syndicate Messenger (Ravnica Allegiance #25)
Tenth District Veteran (Ravnica Allegiance #26)
Tithe Taker (Ravnica Allegiance #27)
Unbreakable Formation (Ravnica Allegiance #29)
Watchful Giant (Ravnica Allegiance #30)

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.