User blog comment:Neppudere/NepNep's "Skill Standby" Testing, Explanation, and Verdict/@comment-26573907-20150911032217

Actually, I think this was how the skill has always worked, only now it's visible to you and now you can unleash it. It would explain why in PVP the defense team never blocks on the attacker's first turn. This would also explain why in FAW fights, it would seem like Summer Oracle would almost always block with both procs most of the time. It seemed much higher than 55%. Because the FAW and minions don't always use their skills, it gives you extra turns to go into standby mode.