Tapes

I see your point, but those however just broke the Canterlot shield and entered in the city. They didnt really have much time to feed (and possibly become stronger in the process?)

In "A Canterlot wedding", Chrysalis overpowers Celestia due to the power of Shining Armor's love for Cadence. This led me wondering if other changelings could get so much power too. Thorax befriended Spike, Twilight, crystal ponies. So thanks to his new friends' love, I wonder how much power would he gain from them in a few weeks or months. What do you think?