Earth

Defensive

• Stone Wall

Offensive

• Rock Shards
• Stone Fists

Resource
Nearby Earth.  Almost Everything is Made of Earth.

+WATER

• Clay Body Defensive
• Clay Entrapment Offensive

+FIRE

• Molten

+AIR

• Sand

Fire

Defensive

• Hot Body
• Ring of Fire

Offensive

• Hot Hands
• Scorch
• Fire Balls

Resource
Body Heat.
The Sun increases Body Heat.
Nearby Fire.

+WATER

• Steam

+EARTH

• Molten

+AIR

• Fire Breathing / Expansion

Water

Defensive

• Water Sphere
  

Offensive

• Water Whip
• Water Orbs

Resource
Water in the Air.
One's own Internal Water.
Carried Water / Water Bodies.

+AIR

• Bubblebeam
• Water Guns
  
• Ice, Hail
  

+FIRE

• Steam

+EARTH

• Clay
• Mud

Air

Defensive

• Whirlwind

Offensive

• Air Push
• Razor Wind
  

Resource
Air around them.
One's own Breathe.

+EARTH

• Sand

+FIRE

• Fire Breathing / Expansion

+WATER

• Ice, Hail
  
• Bubblebeam
  
• Water Guns