Mana Web
Mana cost
Mana value3TypeArtifact
Color identity
Colorless
RarityRare
SetWeatherlight (WTH)
ArtistHannibal King
Price€9.20 · $16.98
Mana Web 
Artifact
Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce.
Legality
CommanderLegalStandardNot legalPioneerNot legalModernNot legalLegacyLegalVintageLegalPauperNot legalBrawlNot legalOathbreakerLegalHistoricNot legalTimelessNot legalPenny DreadfulNot legal
Rulings
2008-04-01
When a land an opponent controls is tapped for mana, this card checks which types of mana (white, blue, black, red, green, or colorless) that land could produce using any of its mana abilities, not merely the one the player just used. Then it checks which lands that player controls have abilities that could produce any of those types of mana. Then it taps those lands.
2008-04-01
The lands that are tapped by Mana Web’s ability don’t produce mana as a result.
2008-04-01
The opponent can tap their lands for mana in response to Mana Web’s ability triggering.