[zlefin]

one VERY important point to consider with green dragon is its ability to (barring a nasty mute or feeblemind affliction) cast Gift of Health; which can cure any afflictions he's gotten earlier, as well as even being able to heal a feeblemind or mute gotten after you've cast it (as long as you still live). GoH + regen is always strong, and lets the dragon be quite dangerous defensively even later in the game. Of course whether you can get up GoH in a game depends a lot on game size and your nations, but it's an important point to consider for the green d.