Seaside Citadel

Land
Seaside Citadel enters the battlefield tapped.
{T}: Add {G}, {W}, or {U} to your mana pool.¹
For wisdom's sake, it was built high to gaze on all things. For glory's sake, it was built high as a testament of power. For strength's sake, it was built high to repel all attacks.
Illus. Volkan Baga

Format Legality	Legal in Vintage, Legacy, Extended, Standard
Printings (1/9)	Shards of Alara (Uncommon)