28 cards matching set is ogn, color is colorless

Altar to Unity
Aspirant's Climb
Banned
Banned in sanctioned Constructed tournaments
Back-Alley Bar
Bandle Tree
Fortified Position
Grove of the God-Willow
Hallowed Tomb
Monastery of Hirana
Navori Fighting Pit
Obelisk of Power
Banned
Banned in sanctioned Constructed tournaments
Reaver's Row
Banned
Banned in sanctioned Constructed tournaments
Reckoner's Arena
Recruit (DE)
Recruit (NX)
Recruit (ZN)
Sigil of the Storm
Sprite
Startipped Peak
Targon's Peak
The Arena's Greatest
Banned
Banned in sanctioned Constructed tournaments
The Candlelit Sanctum
The Dreaming Tree
Banned
Banned in sanctioned Constructed tournaments
The Grand Plaza
Trifarian War Camp