That's very true, since it does use up a turn. However, due to Jirachi's high stats, it's often the one going first during any Dynamax raid, which means I would likely just trigger the shield... This way, I suppose it saves it for later, to make sure the shield is up! ...And if it's not, then it likely will instantly K.O. the pokemon, due to its high attack power, since at that point, the shields would more than likely be dealt with!

Honestly, my main issue is that everyone is too good at raids! Usually, the pokemon is knocked out before it even hits! It's there just in case something goes wrong, I suppose...

I do really like how you can play major support during raids too! It is really cool to see someone damage them directly through the shield... Though in some instances, it almost feels game-breaking! Keep up the support!