[@Lonewolf685] Taking the form of something small and sneaky would be along the lines of my best plans for "who cares about the relic or Titania, I just want out of here alive." 

She's not really that strong. She has the flexibility, not the raw power. She couldn't lift her staff if she made it that big. It was established that Titania's bullets were strong enough to break through Monkey's Tome after she had turned it into a big pillar, and her Stoneskin, and kill her. So, any plan that relies on her own raw power is going to fail a lot. Unless it's kicking that old man in the balls again. Hence my plan for mildly inconveniencing Yggdrasil was to hit his house's flight mechanisms, and try to guide it to fall on him.