Gritty D&D House Rules Lite

-Successful reflex save when using shield allows user to block projectiles and touch attacks (base reflex save + shield armor bonus Vs. targets attack or DM DC)

-Casters require no materials (save for holy items for divine casters), non-spontaneous casters must have a spell/holy book and must find a place to learn the spells
they want for each level, requiring 1 day per level of the spell learned.  To learn the spells, depending on the setting, it can be easier or harder to find spells to learn,
either being located in arcane colleges, forgotten ruins and tombs, or within other realms/dimensions.  Cantrips/Level 0 spells are always considered to be pre-recorded in
a non-spontaneous casters spell book.

-Casters are limited to the level of spells they can cast of 10 + (spell level) based on their associated ability score which they use to cast spells, so a Sorcerer with
14 Charisma cannot cast 5th level spells.

-Wizards no longer need to memorize their spells, instead relying on their spellcraft skill.  The check to cast a spell for a wizard is 15 + the spells level.  While they no
longer need to remember spells, and can thus cast as many times per day as they like, failure to cast a spell causes a Wizard to take non-lethal damage equal to 1 x
(spell level).

-Sorcerers now pick 2 schools of magic that they are magically gifted in (Abjuration, Conjuration, Divination, Enchantment, Evocation, Illusion, Necromancy, Transmutation)
and may cast any spell from those 2 schools if they are the proper level, in accordance with their allowed spells per day. For balancing reasons, Universal spells count as
a "school".

-Reviving someone does not work if they; died of old age, were decapitated, melted, disintegrated, petrified, cut in half, immolated, exploded, crushed, or eaten (Those who
are frozen can be revived only if they are not shattered)

-HP is now based on Constitution score + constitution bonus -/+ size + Hit die.  So if a character is medium, has 14 Con and a +2 bonus, they have 16 HP.  If they are small,
they recieve a -1 to HP, if they are tiny they recieve a -2, though if they are Fine they recieve a -4.  Like-wise the opposite is true for larger enemies, where Large
characters have a +1 bonus to total HP, huge have a +2, and doubles as it progresses starting from a difference of -/+1.  Characters can not have less than 1 HP.

-Any form of armor or natural armor now also acts as Damage Reduction.  For natural armor, any weaknesses the creature may have nullifies damage reduction from their
natural armor. Bludgeoning weapons ignore half of any DR rating from regular or natural armor, piercing weapons ignore DR upon a critical hit, slashing weapons may
dismember limbs upon a successful crit (Fortitude save vs 10 + Damage after damage reduction taken into account)