The most useful monster.

Lesh, I didn't quite get the meaning of that phrase. Fire Breath only affects the second unit standing behind. And the shield works during attack\defense:)
Otherwise, the Efreet and Phoenix only take half damage from each other)

If I correctly understand the concept of "Fire Breath" (which isn't a fact), then Fire Breath only affects the second, and sometimes even the third unit (if they are standing close). The CD also has it, and I think it is calculated slightly differently than direct damage.
Have you noticed that when attacking two enemies, often the second one takes more losses than the first (again, I'm not entirely sure)
Fire Shield doesn't work on Phoenixes at all.
An Efreet standing behind someone also won't take any damage.
But they take direct damage in full (in my opinion). If this is so important to you, I'll try to find the formula and just test it in battle, but then you'll owe me a BEER:smile20: