Ray attack spells

Most ray spells are part of the Arcane School of Conjuration, Fire Blast, Lightning Blast, and several other "_____ Blast" spells. And the Necromancy spell "Necrotic Ray".   A small number of ray attacks are theurgy, Fire ●●● and Weather ●●●●   Ray spells all work basically the same. The successes rolled on the casting determines base damage and you roll to hit with Dexterity + Archery or Dexterity + Athletics, whichever is higher. Assuming the ray hits, any extra successes above the minimum to hit are applied as bonus dice, just like when making an attack with a bow or crossbow.   Ray spells have an effective range of 100 yards.   3 yards or less is "point blank range", -1 difficulty to hit.   3 to 50 yards is considered "normal range", no modifiers.   51-100 yards is considereed "long range, +1 difficulty to hit   Ranged Combat Modifiers all apply to ray attack spells (target is prone, target is behind cover, visibility is poor), etc.