And I probably focused to much on her weaknesses in my previous post. Let's fix that.
She's a rainbow, that alone puts her leagues ahead of 99% of golds. She's one of very few Blunt 6*'s, and weakness multiplier is nothing to scoff at. She has the highest multiplier of all speed-attack buffs. Flat +150 speed is always nice to have, as it makes it a lot easier to manage your teams speeds. Lastly, attacking twice on first turn is actually quite useful for event/Aqua Shadow farming. And compared to Denobrium, Lagurus is weaker as turn one sweeper, but Denobrium really falls short in case the fight doesn't actually end in a single turn.