Red Dragons vs. Emerald Green

[Zechnophobe]

Red Dragons are the best. They do better damage per leadership than black dragons, and by far more than greens, just on their basic attack, but can hit two squares. They have better resistences than greens.

The line of Flame ability is often a 2 or three hit ability without retaliation compared to the Capture ability for greens that only hits one with no retaliation. Mana source is the only obvious advantage of greens, and while it is kinda cool, the mana generation from it isn't very impressive compared to most other ways for a mage to get mana (Transmute, concentration, etc etc).

[Metathron]

Originally Posted by Zechnophobe

The line of Flame ability is often a 2 or three hit ability without retaliation

And will often burn targets to boot!