Tamiyo's Logbook
Price
Artifact — Book
Tamiyo's Logbook
Mana
Oracle text
{5}{U}, {T}: Draw a card. This ability costs {1} less to activate for each other artifact you control.
Commander : legalModern : legalPioneer : legalStandard : not legalLegacy : legalVintage : legalPauper : not legal
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Official rulings (1) · Scryfall
2023-02-04
The cost reduction of the activated ability applies only to the generic mana component of the activation cost. It can't reduce colored mana costs. Even if you have five or more artifacts, it still costs {U} to activate.