The idea for this trap is a hide "black hole" full of pitch that can slow down \ makes damages to the enemy troups ; if a single enemy enter in black hole that can be slow down \ damaged for few seconds, and if other troups enter in the hole they can free the troups already inside that can go out from hole...
The pixel size of the hole, and the d charge of this, can be done sing black elisir :caticon::caticon::caticon:

