Spell Grammer

Here's some "grammatical" expressions that would work with spell-verbs for the dice system I've described below. You can encode 2 + potency + "extra" types on information in each "sentence." The 2 bits of information need to be numerical or sequential with possible results ranging from 1-7 and both need to be about equally important (about as important as potency). The "extra" data can be qualitative and will likely determine the # of dice thrown into the endeavor.

Potency: Potency determines the power of the spell, its range, its duration, and its resistance to being dispelled. Duration is easiest: every round, the caster rolls 1d6 for his active spell. If its equal to or greater than the spell's potency, that spell ceases to function. Dispel checks basically work the same way, except someone else is making the die roll. Power is a catch-all used for comparing spells. Not sure if your Illusion holds up to their Divination? Want to know if your Ward hedges out their Summoned critter? Compare potency. Finally, potency determines range in hexes that the caster can cause the spell to occur. Note that some spells might specifically override some of these factors, in which case, that spell's "sentence" takes priority over Potency.

SUMMON [CREATURE TYPE] of [# of HD] that is [HOW FRIENDLY?]

• Creature Type: Inserted by player based on desired skill (earth, water, angelic, etc).
• # of HD: The creature has HD equal to DIE ROLL + Caster's HD - 3. The "3" is variable based on the GM's campaign -- if he wants powerful summons, he should lower the number. If he wants weak summons, he should increase it.
• How Friendly: Immediately upon completing the summons, the caster makes a reaction roll with this DIE ROLL as a bonus.
  

EVOKE [ELEMENT] of [Pips of Damage] in [# of Hexes of AOE]

• ELEMENT: Inserted by player based on desired skill (earth, water, angelic, etc).
• Pips of Damage: The number of hits of damage done by the spell.
• # of Hexes of AoE: The size of the area effected, shaped in a line, circle, or ring. Note that this lets "EVOKE" be used to create fireballs (low potency spells), walls (linear spells with higher potency), or dangerous zones on the map (circular spells with higher potency).
  

ABJURE [ELEMENT] in [# of Hexes or Creatures to be warded] with [Damage Resistance]

• ELEMENT: Inserted by player based on desired skill (earth, water, angelic, etc).
• # of Hexes or Creatures to be Warded: The size of the area effected, shaped in a line, circle, or ring, or the number of creatures to be protected.
• Damage Resistance: Each creature affected gains DR/specified element while the spell is in effect.

Here's a question: Should Potency checks be made by the caster or by the affected creature?

For example, say a mage casts "Abjure Fire" on his party. Should the mage check for spell expiration every round (meaning the whole team loses it at once?)? Or is it up to each individual to check themselves each round for any active spell effects? I'm tempted to say the latter as it gives everyone something to do.