The Hydra v1

Here is a rough outline for the dreaded Hydra.


[size=+1]Hydra[/size]
Monstrous Dragon-kin – CR = 12
Size: Huge (4x4 squares 20’x20’)
HP: 1200 WP: 600
MP: 700 SP: 350
Init: +10 Hit: +0
Dodge: +10 Block: ---
Def: 70/0 (70) M.Def: 15
Basic Melee Attacks:
Bite: The Hydra lashes out with one of its heads. If it hits, it deals 2d12*10+STR Breaching 10 damage.
Stomp: At a cost of 50 WP, it brings one of its feet down on its unfortunate prey. If the prey fails to dodge, the Stomp deals 2d20*10+STR Crushing damage. If the attack misses, it still has a chance of causing any enemy within 10’ to Stumble, and lose its action. The enemy must make an RC Endurance check of 70 to avoid Stumbling.
Four Heads are Better than One: The Hydra begins the encounter with four (4) heads. At a cost of 20WP per head, the Hydra can roll Initiative equal to its number of heads, then take a turn on each Initiative.
Malodorous: A strange smell emanates from the Hydra at all times. Any time a melee attack is made against it, the attacker must roll RC Endurance 65 or have their total damage reduced by 15 for that round.
Head Regeneration: The Hydra cannot be Decapitated. If it loses one of its heads, two more grow in its place, increasing its total HP by 40 per new head.
Base Stats:
Str: 100 End: 70
Mag: 8 Will: 15
Spd: 10 Sth: -15
Per: 20 Kno: -5
Monstrous Lore:
Check 50: It’s a gigantic, dragon-like creature with multiple heads. Not much more to say. The heads seem to be able to interact independently of one another.

Keep in mind, this isn't the final draft. I already don't like it very much, for a few reasons:
1) The Challenge rating is too low. According to a conversation between Eight Star and myself, we determined that the CR for each memeber of the Mane 6 is around 10 (in TwV terms, that is).
2) I feel like it should have more abilities. I don't think it could breathe fire or anything in the show, right? Maybe I should use abilities that the mythological Hydra had.

Some terminology:
"Breaching" - The Parasprite had an attack like this, too. Breaching damage means that it ignores a certain amount of defense. In the Hydra's case, it's Bite ignores 10 defense.
"RC" - A flat roll check. "RC Endurance 70" means that the target has to roll over 70 for Endurance.
"Crushing" - Unblockable damage. No defense is counted when determining damage.