Thunderbrd
C2C War Dog
I would just think that there's going to be yummy easy gimme hunts out there mixed in with some really fearsome and dangerous predators making the hunt not so perfectly safe. I'd prefer that to being henpecked to death by tons of what should be mostly harmless fauna.
Edit: The cobra gives this, I think, because it has a pretty killer amount of first strike power. You may notice that the way that works is that if the game thinks your unit should have lost the battle, it tends to award a free promo when it makes it through against the odds. The cobra is a bit unusual in its design and it fakes out the free promo system as a result. I think its also getting benes from cobras when the cobra ATTACKS. If it wasn't for the limit on how much damage the cobra could do before it forces the cobra to withdraw, most units surviving battles with the serpents would die instead.
Edit: The cobra gives this, I think, because it has a pretty killer amount of first strike power. You may notice that the way that works is that if the game thinks your unit should have lost the battle, it tends to award a free promo when it makes it through against the odds. The cobra is a bit unusual in its design and it fakes out the free promo system as a result. I think its also getting benes from cobras when the cobra ATTACKS. If it wasn't for the limit on how much damage the cobra could do before it forces the cobra to withdraw, most units surviving battles with the serpents would die instead.