Arcane Dragon

The Arcane Dragon is a Boss level monster in the game. It can be randomly encountered after clearing stage in Adventure. Due to its nature as multi-elemental, no one team of elementals will always be effective.

The Arcane Dragon has 3 phases in random order;

Fire: Significant area denial ability, but specializes in high power attacks
Meteors: Constantly rains meteors the entire phase. Watch the red lines

Fire Orb: Charges an orb of fire in front with a very distinct sound. After about 5 seconds of charging, it is launched at your position.

Fire Breath: The dragon screeches as an aura surrounds it. Then it launches a continuous fire stream after a second's delay. The dragon strafes with this attack, so be careful of being pushed into a meteor.

Tackle: Looks like the charge-up for a fire breath, but actually tackles. Strafes slightly using this.

Water: Specializes in attacks from a static position
Ice star: From the beginning of this phase, a four-pointed star of ice will always be bouncing around the field. It won't always be in your flight area, but watch when it does.

Ice knives: Launches frozen homing blades similar to the elemental Blizzard. Their strong homing can easily nick you if you dodge too soon.

Icicle rain: Icicles randomly spawn at the top of the screen and drop down. One will drop on every possible column, so it's safe where one has already fallen.

Frost breath: Gathers aura before breathing ice. The dragon stays in place for this attack, so just watch the ice star.

Light: Specializes in area denial
Laser portals: Spawns a portal that aims at you for about 3 seconds before firing a laser. Watch the gold line.

Spark line: Spawns two sparks that create a laser barrier between them. Defeating one of the sparks will drop the line, but the sparks turn blue and become projectiles as they fall.

Lightning breath: The dragon strafes as he launches three bursts of lightning. Time your movement to jink across him between bursts.

Abilities all three phases have
Barrier Runes: At higher levels, the Arcane dragon can spawn four runed cubes. These cubes act as shields by not only drawing elemental fire, but also by granting the dragon a damage reduction buff as long as they still stand.

Spawn Dragon Eggs: These trash mooks swoop around the field in groups of four. They don't do anything but act as cannon fodder and drop Orbs for Elementals

Lines
Fire: You dare challenge me with your puny fire elemental? Squirm, you little worm!

Ice: Foolish wings...I shall freeze you to your bones!

Light: I can zap bugs with lightning. Prove you're more than vermin!