Energy Transformation

This spell creates a permanent, undetectable magical field. It absorbs magical discharges, such as spell effects and item functions, and uses them to power (extend the duration of) an existing magical spell or spelllike effect, with which the energy transformation is linked. Your casting of this spell must include naming the existing magic it will be powering, and must outline any desired limits on the absorption area of the transformation within the area of effect. The spell field does not affect any magical items or weapons unless they are casting a spell or using a spelllike effect when they contact the field; in such cases, the energy transformation field absorbs the spell effect but has no further effect on the item or weapon.

The field absorbs spells cast through its area of effect. It absorbs spells of all types that come in contact with the field, save for abjuration and conjuration spells. Any external magical effects on weapons or items will be slightly hampered by the field; for example, glowing weapons or a continual flame spell will visibly dim and flicker while passing through field.

One example of the spell can be seen in the Undermountain complex of the Forgotten Realms setting, where a caster trying to use a teleportation spell will encounter endless, overlapping fields of multiple energy transformation spells, where teleporting towards the goal causes the spell to vanish. Many of the wizard Halaster's energy transformation spells silently drink the spell energy, using it to further the magical field that cloaks Undermountain's passages and prevents scrying and teleportation magics of all types. Other uses might include a field around an icon, using spell energy to recharge a magical item within the icon itself.

The only way to remove an energy transformation field is to use a wish spell, as dispel magic will simply be absorbed by the field without effect. Additionally, the original caster can end the effect of the spell at any point by spending 5 minutes performing a ritual and touching the object the field was feeding, though they cannot change the specifics of the spell without casting the spell again.