Mirran Creature Template
The world of Mirrodin was converted, or, more acurately, compleated into New Phyrexia just recently, finishing the transition from the metallic utopia of Argentum. What most people, even New Phyrexia's former and present inhabitants, don't realize is that the corruption started far before any Phyrexian even set foot on the plane. In fact, the roots of the invasion can be traced to a single drop of Phyrexian oil Karn, the plane's own creator, accidentally left in contact with Argentum's surface. That droplet was a sample of glistening oil, a kind of invasion weapon in the form of an engineered disease, created by Yawgmoth himself. That small, tainted splash would replicate itself uncountable times, corrupting Memnarch, Mirrodin's warden created by Karn, along the way and eventually sweeping the entire globe, infecting almost everything it touched, working towards the Phyrexian warped sense of perfection: true, compleat phyresis.
Along the way, though, the corruption wrought by the glistening oil had an unintended, strange side effect: the creation of a metallic, fungal organism called Mycosynth, which bloomed and flourished in most of the world's core. This organism released spores that spread throughout the plane, changing metal to flesh and flesh to metal, causing metallic growths in the skin of organic beings while converting artifact creatures into living things.
The result for these organics was their transformation into mirran creatures, beings not unlike their forefathers, but certainly unique in the sense that a considerable part of their bodies is covered, if not converted, into metal.
Sample Mirran Creature
Auriok, 1st-Level Warrior (Mirran Human)
Medium Humanoid (Mirran)
Hit Dice: 1d8+1 (5 hp)
Speed: 30 ft.
Armor Class: 20 (+1 Dex, +3 natural, +4 scale mail, +2 heavy shield), touch 11, flat-footed 19
Base Attack/Grapple: +1/+2
Attack: Glaive +3 melee (1d10+1/x3) or javelin +2 ranged (1d6+1/x2)╣
Full Attack: Glaive +3 melee (1d10+1/x3) or javelin +2 ranged (1d6+1/x2)╣
Space/Reach: 5 ft./5 ft.▓
Special Attacks: None
Special Qualities: Human traits, mirran traits, reinforced skin
Saves: Fort +3, Ref +1, Will -1
Abilities: Str 13, Dex 12, Con 13, Int 10, Wis 9, Cha 8
Skills: Listen +3, Search +2, Spot +3
Feats: Alertness, Weapon Focus (glaive)
Challenge Rating: 3/2
Alignment: Any, sometimes neutral
Advancement: By character class
Level Adjustment: +1
╣Even though he's not proficient in unarmed combat, this human's unarmed attacks do 1d4 points of damage.
▓If fighting with the glaive, the reach increases to 10 ft.
Creating a Mirran Creature
"Mirran" is an inherited template that can be added to any living, corporeal creature (referred to hereafter as the base creature).
A mirran creature uses all the base creature's statistics and special abilities except as noted here.
Size and Type: The creature's type remains the same, but it gains the mirran subtype. Size is unchanged.
Armor Class: Natural armor improves by +3.
Damage: Choose one of the base creature's natural attack forms. The damage for this natural weapon increases by one step, as if the creature's size had increased by one category: 1d2, 1d3, 1d4, 1d6, 1d8, 2d6, 3d6, 4d6, 6d6, 8d6, 12d6.
A weapon or attack that deals 1d10 points of damage increases as follows: 1d10, 2d8, 3d8, 4d8, 6d8, 8d8, 12d8.
Special Qualities: A mirran has all the special qualities of the base creature, plus the following special quality.
- Reinforced Skin (Ex): When a critical hit or sneak attack is scored on a mirran, there is a 25% chance that the critical hit or sneak attack is negated and damage is instead rolled normally.
Abilities: Increase from the base creature as follows: Con +2.
Treasure: Same as the base creature, but metal might be salvageable from the body.
Challenge Rating: Same as the base creature +1.
Level Adjustment: Same as the base creature +1.
I made this template with the metal-covered creatures of Mirrodin in mind, but it could be used in any setting with little modification. Any input would be greatly appreciated!