Below is our walkthrough for Angry Birds Epic Star Reef Castle. This is an incredible 5-wave castle, meaning our video is over 8 minutes long (sorry). Our strategy is as follows. In wave one, the magician pig cause the most disruption, so take him out as quickly as possible. For wave two, immediately use the Rage Chili via Bomb, then target the lightning pig before he gets too powerful. At the start of wave three, again feed Bomb the Rage Chili and focus from largest to smallest pigs. Same pattern repeats for the fourth wave, and then notice in the final wave that Wizpig heals when he does damage. It is key to stun him as many times as possible.
Completing this level will retrieve the 3rd stolen Egg!
Note: Completing this level also retrieves the Blue key! There are many places you may venture now: Eastern Cobalt Plateaus Level 5, Banjo Bayou (back near Pirate Coast), or continue chronologically to Bamboo Forest (near Great Cliffs).