Deep Water

Enchantment, UU (2)
{U}: Until end of turn, if you tap a land you control for mana, it produces {U} instead of any other type.¹
Illus. Jeff A. Menges

Crystal Keep Rulings Summaries

• All affected lands produce just one blue mana regardless of how many it might normally generate. [Duelist Magazine #3, Page 7]
• Mana Flare will provide one extra blue mana. [Duelist Magazine #3, Page 7]
• Will remove restrictions on how mana generated by the land is used. [Duelist Magazine #6, Page 131] For example, the blue mana from a Mishra's Workshop can be used for any purpose.
• It affects lands you control when it resolves and any lands you gain control of this turn. [D'Angelo 1999/08/18]
• Extended tournaments (see Rule 803) have banned this card since 1999/10/01.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/2)	The Dark (Common)