mob testing unit

this device i much similar to the aperture mob testing lab thing but w/ out mods only "spawns" 1 mob
and doesn't has TNT or arrows currently, i will get around it
the door takes a wile to open (not shown)
use common cence while operating this unit ( if you dont have any go buy some

download will be posted when finished

-Alfnzo

Additional Notes

i will however wont put in the changing biome part as a said i don't have mods

don't use lava and water at same time (duh)
or hit the reset repeatedly and the door takes a wile to open