Hello, mages!

Two more Earth spells were added this week:

"Clod"
During preparation mage quickly lifts several rocks in the air and collides them with each other one by one, forming a hude clod and then launches it.
Holding left mouse button is required to form a clod. Release to launch. If clod is fully formed, it launches automatically. On lower levels or not fully formed clod flies fast and in relatively straight trajectory. The more rocks there is, the heavier clod will be, resulting in slower movement speed and less straight trajectory. Worth noting that forming a clod required strong concentration from a mage, so it is easy to interrupt this spell.

"Bog"
It is an area of effect spell which covers a selected region on a surface with a boiling viscous mud. Everyone inside it start accumulating a "Dirt" status, which slows down movement speed the more Dirt there is. When reaching 100%, Dirt changes to Petrification.
Bog can be set on fire using fire spells. Then everyone inside will be also set on fire instead of get covered in dirt.

Also new spell parameter was added: Complexity. This parameter adds ability to approximate how difficult it is to prepare a spell from the perspective of managing concentration.
Default value is 10, lesser values mean more comfortable casting and less influence on concentration when moving around. Larger values mean the opposite: spell is easier to fail when actively moving.