Change my mind :)
Here are its changes from a normal tribe.
Hunting => Forest Magic: This change sucks unless you are in a crowded game, and even then going for an economy setup and rushing knights is MUCH better than using these pathetic 1 defense units
Clear Forests => Sanctuaries: This change is what makes Elyrion such a terrible tribe. For one, your custom house locations are going to be crap. For two, sactuaries are way too expensive for early game, which is when you need them the most anyways.
Whaling => Water Magic: This sucks for several reasons. Sure, the navalons are strong but there are several problems. Problem #1: Whales are extremely rare anyways, which means you can't mass produce these. If a whale dies thats it for that whale. Problem #2: Its range is only 1 which means no retaliation from enemy attacks between turns. If you put this deep in enemy lines there is an extremely good chance your navalon will get annihilated. Problem #3: It doesnt 1 shot the battleships or any type of boat with 15+ HP. That means its persist ability is essentially wasted and you are just left with a worse crab.
Giants => Dragons: Once again, a terrible change for this tribe. First of all it requires a whole SIX TURNS to turn into a dragon. THATS A REALLY LONG TIME! Even after turning into a fire dragon, it still can get destroyed by battleships and then boom, there goes a unit worth 10 stars and 6 turns to make. Plus, you can't make giant battleships thanks to these dragons, and giant battleships are just objectively better than dragons in every way except "Splash".