Yup, he also gets a lot of MPM, so it's hard for dragon to hit him. Not necessary, but you can also equip something like Party Tog on the turn I dismissed dragon to get extra Crit chance, or even use Atgasedd Doll for a tiny bit of Boost and Bonus
Baby Chimera is a reward from beating all the challenges on the first Otherworldly Creatures board: forums2.battleon.com/f/tm.asp?m=22316511 If you're new to Inn I recommend checking out the Inn Progression Guide I link in my description boxes!
Just to make it more accessible for people who don't have a fully fed dragon. It doesn't change much, but if you put 200 points in Magic you can use Nova on Thyton on T8 if he isn't dead by then