Could be something simpler, like how "bulky" and "heavy" Herald's animations work, dragons could use some of that.
I like how weak spots work in LOL PVE, sadly just Herald until now, dragons could have one as well and each dragon could have a different one.
#QOL DRAGON IDEA OUT OF MY HEAD JUST NOW THAT CAN AND SHOULD BE REFINED:
- FIRE DRAKE: BREATHS FIRE IN A CONE IN FRONT OF HIM PERIODICALLY DEALING BURN DAMAGE AND APPLYING GW ON TARGETS, ALSO FIRE DRAKE HAS AN AOE BURN LIKE SUNFIRE CAPE DEALING MAGICAL DAMAGE TO ANY TARGET IN MELEE RANGE.
WHEN UNDER 50% HP A WEAK SPOT APPEAR IN HIS THROAT WHEN USING HIS FIRE BREATH, MELEE ATTACK EXPLODE THE WEAK SPOT DEALING 10% OF DRAKE'S MAX HP, CANCELLING THE BREATH ATTACK AND STUNNING IT FOR 2 SECONDS. (BREATH ATTACKS DO NOT OCCUR AFTER PROC THE SPOT FOR THE FIRST TIME.)
- AIR DRAKE: EVERY 10 SECONDS IT CAST A WIND BLAST FOR 1 SECOND ON THE PIT, KNOCKING TARGETS AWAY(SIMILAR TO THE SPAWNING MECHANIC THEY CURRENTLY HAVE), TARGETS THAT STRUCK THE WALL ARE STUNNED FOR 0.5 SECONDS, AFTER THIS ACTION IT CREATES A STORM SHIELD AROUND ITSELF REDUCING 50% OF THE DAMAGE FROM PROJECTILES FOR 4 SECONDS.
WHEN UNDER 50% HP A WEAK SPOT APPEAR IN HER WINGS WHEN CASTING THE WIND BLAST, PROJECTILES EXPLODE THE WEAK SPOT DEALING 10% OF HER MAX HP, CANCELLING THE CHANNELING AND STUNNING HER FOR 2 SECONDS. (WIND BLAST DO NOT OCCUR AFTER PROC THE SPOT FOR THE FIRST TIME.)
- EARTH DRAKE: PERIODICALLY SLAMS HIS TAIL ON THE GROUND CREATING TREMORS THAT SLOWS TARGETS NEAR AND BEHIND THE PIT, ALSO GROUNDING THEM. AFTER SLAMMING HIS TAIL IT GAINS A ROCKY SHIELD THAT RETURNS 10% MELEE PHYSICAL DAMAGE BACK TO THE ATTACKER AND GRANTING HIM A SHIELD EQUIVALENT OF 10% OF HIS CURRENTLY HEALTH.
WHEN UNDER 50% HP A WEAK SPOT APPEAR ON HIS TAIL, DEALING MELEE DAMAGE EXPLODE THE WEAK SPOT SHATTERING HIS ROCK SOLID SCALES, REDUCING HIS ARMOR TO 0 AND DEALING 10% OF HIS MAX HP AS TRUE DAMAGE. (TAIL SLAM DO NOT OCCUR AFTER PROC THE SPOT FOR THE FIRST TIME.)
- WATER DRAKE: CHANNEL FOR 2 SECONDS A STORM INSIDE THE PIT AND IN FRONT OF THE PIT, WHILE THE STORM, IS ACTIVE HEALS HER FOR 1% OF IT'S MAX HP EVERY SECOND, FOR 10 SECOND DURATION WITH 20 SECONDS COOLDOWN. CHAMPIONS AFFECTED BY THE STORM HAVE THEIR MOVEMENT AND ATTACK SPEED SLOWED FOR 30%.
WHEN UNDER 50% HP A WEAK SPOT APPEAR ON HER BACK WHILE CASTING THE STORM, MAGICAL ABILITIES EXPLODES THE MARK DEALING 10% OF HER MAX HP, DECREASING HER MR TO 0 WHILE INCREASING DAMAGE TAKEN BY MAGICAL SOURCES BY 25%. (STORMS DO NOT OCCUR AFTER PROC THE SPOT FOR THE FIRST TIME.)
m) interested.
ebb and flow or bubble?
Mountain: Knock up (look like a 
skill if you can reuse assets to reduce costs and/or maybe a randuin's effect?
Elder: Rotates between all other 4 effects (maybe in the order they spawned?)
) around the dragon and burning damage (like 
that's pit wide
Ocean: AoE slow that covers the pit
Mountain: Slower attack speed inside the pit? Explained by tremors in the pit?
Elder: Periodically switch between the other 4 abilities or something huge like instead of the skill only on the first agro, it triggers periodically around the elder dragon as long as they're alive?
