Lets say I have a base damage of 100 and skill that does double damage and another skill that does +5 damage. What would you expect?
205 damage
210 damage
Poll ended at .
@grumpygamer Another vote here for "+5 base damage" in the description, to clear up ambiguity.
But ultimately I reckon you're deciding between prioritising accessibility (keep the words simple and do whatever works best for balance) or strategic play (spell out everything always).