Stupefying Touch

{1}{U} · Enchantment — Aura

Enchant creature When this Aura enters, draw a card. Enchanted creature's activated abilities can't be activated.

Motor: se resuelve a mano

Rulings (2)

Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and will have colons in their reminder text.
Wizards of the Coast · 2016-06-08
Unlike many similar abilities, Stupefying Touch's last ability stops mana abilities from being activated.
Wizards of the Coast · 2016-06-08