I like Ayli, Eternal Pilgrim, but I keep facing the problem that I accidentally cascade into destroying her gems, which ends up killing her (even if my opponent doesn’t have creatures). It’s extremely annoying, and I would love to turn it off most of the time.
No you cannot. Activate gems are always “on” but only trigger abilities when you match them. In regards to the card you mentioned earlier, I want to say that might be a logic related bug…