Initiate (Yuri's Revenge)

Description
Yuri's initiates were powerful units, that used the power of their minds - with the assistance of as yet un-declassified technology, to start fires. These fires were highly effective against infantry, and reasonably effective against structures, but relatively ineffective against vehicles. However, this all changed if Yuri's initiates were garrisoned inside a structure: At that time, the firepower of even a few initiates was increased dramatically, to the point where 4 or so garrisoned initiates could destroy a Grizzly tank in mere seconds.

Counters
Being infantry, Yuri's initiates were vulnerable to Desolators, Seals, Prism Towers and Prism Tanks, Boris and Tanya, Attack Dogs, Tesla Towers and Tesla Tanks, as well as all manner of flying units.