Her 1st Ascension occurs automatically after the completion of Septem. In addition, her Skill Strengthening, Ascension and Noble Phantasm upgrades cannot be performed normally. She is also the only Servant so far to have been both a 3 and 4.
Mashu is the only Servant to have 0 cost. Ok this motion is part of the 'Undefeated' series, this has been available in my patreon page for a few months now, but the time for public release is finally here, there are more on the way so check my channel every other day and check out the goodies I will be making public, also once again here is a friendly reminder that Izumi 2.0.25 is already public. Mashu Kyrielight, also known as Shielder, is the first Servant in Fate/Grand Order.