Your height immediately doubles, and your weight increases by a factor of eight. This increase changes your size category to the next larger one, and you gain a +8 size bonus to Strength and a +4 size bonus to Constitution. You gain a +4 enhancement bonus to your natural armor. You gain
damage reduction 5/evil (if you normally channel positive energy) or
damage reduction 5/good (if you normally channel negative energy). At 12th
level this
damage reduction becomes 10/evil or 10/good, and at 15th
level it becomes 15/evil or 15/good (the maximum). Your size modifier for AC and attacks changes as appropriate to your new size category. This spell doesn't change your
speed. Determine space and reach as appropriate to your new size.
If insufficient
room is available for the desired growth, you attain the maximum possible size and may make a Strength check (using your increased Strength) to burst any enclosures in the process. If you fail, you are constrained without
harm by the materials enclosing you- the spell cannot crush you by increasing your size.
All equipment you wear or carry is similarly enlarged by the spell. Melee and projectile weapons deal more
damage. Other magical properties are not affected by this spell. Any enlarged item that leaves your possession (including a projectile or thrown weapon) instantly returns to its normal size. This means that thrown weapons deal their normal
damage (projectiles deal
damage based on the size of the weapon that fired them).
Multiple magical effects that increase size do not stack.