Great Form (Grim Alteration)

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The grim grows a size category larger.

Great Form

The man stood there, silent and still as the night, and then he began to glow, and suddenly he was towering above us like some terrible beast, striking down our men left and right, and before we could mount a proper defense there was nothing left of our patrol but blood and flesh splattered across the cobblestones.

Prerequisite: Constitution Boon
Description: The grim grows to become one size category larger. A size increase affects any special ability the creature has that is affected by size. Increased size also affects a creature’s ability scores, AC, attack bonuses, and damage values as described below.

The grim doubles his height and multiplies his weight by 8. This increase changes the grim’s size category to the next larger one. The grim gains a +2 size bonus to Strength, a –2 size penalty to Dexterity (to a minimum of 1), and a –1 penalty on attack rolls and AC due to his increased size.

If insufficient room is available for the desired growth, the grim attains the maximum possible size and may make a Strength check (using his increased Strength) to burst any enclosures in the process. If he fails, he is constrained without harm by the materials enclosing him.

All equipment worn or carried by the grim is similarly enlarged. Melee and projectile weapons affected by this Alteration deal more damage. Other magical properties are not affected by this Alteration. Any enlarged item that leaves the grim’s possession (including a projectile or thrown weapon) instantly returns to its normal size. This means that thrown weapons deal their normal damage, and projectiles deal damage based on the size of the weapon that fired them. Magical properties of enlarged items are not increased by this Alteration.

Table: Increased Damage By Size
1d2 1d3
1d3 1d4
1d4 1d6
1d6 1d8
1d8 2d6
1d10 2d8
2d6 3d6
2d8 3d8
Table: Creature Size and Scale
Attack and
AC Modifier
Special Attacks
Height or
Weight3 Space4 Natural Reach4 Carrying Capacity Mulitplier
Tall Long Biped Quadruped
Fine +8 −16 +16 6 in. or less 1/8 lb. or less 1/2 ft. 0 ft. 0 ft. ×1/8 ×1/4
Diminutive +4 −12 +12 6 in.–1 ft. 1/8 lb.–1 lb. 1 ft. 0 ft. 0 ft. ×1/4 ×1/2
Tiny +2 −8 +8 1 ft.–2 ft. 1 lb.–8 lb. 2-1/2 ft. 0 ft. 0 ft. ×1/2 ×3/4
Small +1 −4 +4 2 ft.–4 ft. 8 lb.–60 lb. 5 ft. 5 ft. 5 ft. ×3/4 ×1
Medium +0 +0 +0 4 ft.–8 ft. 60 lb.–500 lb. 5 ft. 5 ft. 5 ft. ×1 ×1-1/2
Large −1 +4 −4 8 ft.–16 ft. 500 lb.–2 tons 10 ft. 10 ft. 5 ft. ×2 ×3
Huge −2 +8 −8 16 ft.–32 ft. 2 tons–16 tons 15 ft. 15 ft. 10 ft. ×4 ×6
Gargantuan −4 +12 −12 32 ft.–64 ft. 16 tons–125 tons 20 ft. 20 ft. 15 ft. ×8 ×12
Colossal and Colossal+ −8 +16 −16 64 ft. or more 125 tons or more 30 ft. 30 ft. 20 ft. ×16 ×24
  1. This modifier applies to the bull rush, grapple, overrun, and trip special attacks.
  2. Biped's height, quadruped's body length (nose to base of tail)
  3. Assumes that the creature is roughly as dense as a regular animal. A creature made of stone will weigh considerably more. A gaseous creature will weigh much less.
  4. These values are typical for creatures of the indicated size. Some exceptions exist.

Special: Multiple magical or supernatural effects that increase size do not stack with this Alteration.

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