Serra Bestiary

Enchant Creature    (CMC:2)

Enchant creature At the beginning of your upkeep, sacrifice Serra Bestiary unless you pay . Enchanted creature can't attack or block, and its activated abilities with in their costs can't be activated.

27 ME4 • ENSteve Luke

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Legal in: Legacy,Vintage,Commander

Oracle Text (click to copy):

10/4/2004
Does prevent the use of activated mana abilities with {Tap} in the cost.
7/1/2013
Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and will have colons in their reminder texts.