Research:Magic

Cast cost
x1.5 for ranged spell. Constant effect enchantments use fEnchantmentConstantDurationMult as their duration values (default 100).

The base cost are here
 * Touch/Self
 * Target
 * Constant effect

Using enchanted items
This makes items last 10 times longer at 100 enchant compared to 10 enchant, making it scale a little too well. MCP uses x = 0.025 * (400 - pcEnchant).

Natural recharge
Every item in the player's inventory charges by tickTime * fMagicItemRechargePerSecond. Items anywhere else do not charge.

Soulgem charging
Refer to Player Craft Skills.

Magic effects
Spells are combinations of one or more effects, which have associated code specific to the effect, and properties which cover cast ranges, resistances and other generalized behaviours that may be shared by a small set of effects.

Effect flags
Flags for all effects:

int effectFlags[] = { 0x11c8, 0x11c0, 0x11c8, 0x11e0, 0x11e0, 0x11e0, 0x11e0, 0x11d0, 0x11c0, 0x11c0, 0x11e0, 0x11c0, 0x11184, 0x11184, 0x1f0, 0x1f0, 0x1f0, 0x11d2, 0x11f0, 0x11d0, 0x11d0, 0x11d1, 0x1d2, 0x1f0, 0x1d0, 0x1d0, 0x1d1, 0x1f0, 0x11d0, 0x11d0, 0x11d0, 0x11d0, 0x11d0, 0x11d0, 0x11d0, 0x11d0, 0x11d0, 0x1d0, 0x1d0, 0x11c8, 0x31c0, 0x11c0, 0x11c0, 0x11c0, 0x1180, 0x11d8, 0x11d8, 0x11d0, 0x11d0, 0x11180, 0x11180, 0x11180, 0x11180, 0x11180, 0x11180, 0x11180, 0x11180, 0x11c4, 0x111b8, 0x1040, 0x104c, 0x104c, 0x104c, 0x104c, 0x1040, 0x1040, 0x1040, 0x11c0, 0x11c0, 0x1cc, 0x1cc, 0x1cc, 0x1cc, 0x1cc, 0x1c2, 0x1c0, 0x1c0, 0x1c0, 0x1c1, 0x11c2, 0x11c0, 0x11c0, 0x11c0, 0x11c1, 0x11c0, 0x21192, 0x20190, 0x20190, 0x20190, 0x21191, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x11c0, 0x1c0, 0x11190, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x9048, 0x11c0, 0x1180, 0x1180, 0x5048, 0x5048, 0x5048, 0x5048, 0x5048, 0x5048, 0x1188, 0x5048, 0x5048, 0x5048, 0x5048, 0x5048, 0x1048, 0x104c, 0x1048, 0x40, 0x11c8, 0x1048, 0x1048, 0x1048, 0x1048, 0x1048, 0x1048 };