Celestial Colonnade is a mythic Land card from Zendikar Rising Expeditions (ZNE), collector number 23. Current market price: $1.39 (foil $2.23), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {W} or {U}. {3}{W}{U}: Until end of turn, this land becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.