To acquire a Hippogriff simply combine a Horse and an Eagle. Bear in mind that when you do this the newly created Hippogriff will have base stats, so don't bother scaling the Horse or the Eagle beforehand!

First you'll need to faint a Nessie in the shop to acquire a Fake Nessie token. Next faint the token and it will create a Peg Leg item in the food shop. When you buy the Peg Leg with an empty space on your squad you will summon Moby Dick. As soon as you do this your trophy target will increase from 10 to 12, so make sure your team is strong enough to go the extra distance! Tip: The Dazed ailment is super useful for bypassing Moby's self-remove ability, as are the swallow pets like Whale and Pelican or the transformers like Roloway Monkey or Silky Sifaka.