Cyril's Surge Mastery
(Invocation/Evocation, Wild Magic)

Range:  Special
Components:  V, S
Duration:  Instantaneous
Casting Time:  2
Area of Effect:  Special
Saving Throw:  None

This spell is similar to the 1st-level Nahal's reckless dweomer, in that it releases the power of a wild surge, in the attempt to create a useful effect. Unlike Nahal's reckless dweomer however, this spell does not allow the caster to name an "attempted" spell. To balance this drawback, the caster has a 33% chance of controlling some aspect of the surge created. Since no spell is named as "attempted", there is no other effect than the surge.
When this spell is cast, the caster should name a target. The DM then rolls up a surge, adding the caster's level as a modifier, and rolls 1d6. If the die rolled is 3-6, the surge proceeds as rolled. However, if a 1 or a 2 is rolled, the DM should announce the surge to the caster, and give the caster an opportunity to control some aspect of the surge.
For example, if the surge "a fireball explodes, centred on the caster" is rolled, the caster could choose to exercise control by saying "the damage from the fireball is the minimum possible". Another example would be to set the duration of the surge "the target is slowed" to the maximum possible. Aspects that can be controlled include damage, duration, area of effect, range, and a +2 or -2 modifier to saving throw. Aspects that are given in random ranges (such as "2d6" or "1d6 + 1 round per level") can be altered to at best the maximum or minimum of the possible range. Aspects that are given in absolute numbers can be halved or doubled.
If the surge rolled states that the "attempted" spell succeeds in some way, the DM should re-roll the surge, as there is no attempted spell with Cyril's surge mastery.

