These optional rules replace ability scores in 13th Age with modifiers only.
    At character creation, pick an array of modifiers to assign to your attributes, then assign +1 to any 2 of those modifiers. You can also choose to drop the lowest number in any array to -1.
    At 4th level, choose an advancement schedule. You gain the bonuses to your modifiers from your chosen advancement schedule in place of adding to your ability scores at 4th, 7th and 10th level. Note: Some arrays have restrictions on the advancement schedules available to them, as noted under each array.
    The rare time the rules call for the ability score itself, calculate it as 10 plus your modifier x 2.
    Notably, arrays A and C match closely with the arrays from the core book, while schedule A aligns well with modifier advancement possible from those arrays in the core game.

MODIFIER ARRAYS

Array A +2 +2 +2 +2 +2 +1 Advancements available: A, B & C	Array B +3 +2 +2 +2 0 0 Advancements available: A, B & C
Array C +3 +2 +2 +1 +1 0 Advancements available: All	Array D +3 +3 +1 +1 0 0 Advancements available: All
Array E +3 +3 +2 0 0 -1 Advancements available: All	Array F +4 +1 +1 +1 +1 0 Advancements available: A, B & D
Array G +4 +2 +1 0 0 -1 Advancements available: A, B & D

ADVANCEMENT SCHEDULES

Schedule A 4th level: +1 to any 3 modifiers 7th level: +1 to one of 3 lowest modifiers 10th level: +1 to any 3 modifiers	Schedule B 4th level: +1 to highest and 2 lowest  modifiers 7th level: +1 to middle 2 modifiers 10th level: +1 to any 3 modifiers
Schedule C 4th level: +2 to any one modifier, -1 to lowest  7th level: +1 to middle 2 modifiers 10th level: +1 to any 3 modifiers, except highest	Schedule D 4th level: +1 to 4 lowest modifiers 7th level: +1 to 2nd highest and 2 of 3 lowest modifiers 10th level: +1 to any 2 modifiers