5.1 Making Attacks
5.1.1 Attack Rolls
To make an attack, roll 1d10 and add your accuracy with the attack. The resulting value is called your attack result. You compare your attack result to one or more defenses to see if you hit. Most attacks are made against exactly one defense, which is indicated in the attack’s description.
5.1.2 Attack Outcomes
There are three possible outcomes for an attack: a miss, a critical hit, and a regular hit. You check the outcomes in that order. This means that if an attack misses, it cannot also get a critical hit, even if you have large accuracy bonuses that only apply to critical hits.
Misses
If your attack result is lower than the target’s defense, it is a miss. An ability that misses a target typically has no effect on that target. Some area abilities say they deal half damage on a miss.
Critical Hits
If your attack result is at least 10 higher than the target’s defense, your attack is a critical hit against that target. All damaging attacks deal double damage on a critical hit unless otherwise specified. Some non-damaging attacks also have special effects on a critical hit.
For every additional increment of 10 by which you beat the target’s defense, the effect of a critical hit is repeated, if applicable. For example, if you get a double critical with an attack that has a critical hit effect of “The condition must be removed an additional time”, the condition must be removed two additional times. As normal, two doublings become a tripling, so a double critical hit with a damaging attack would roll triple the damage dice.
The damage multiplier from a critical hit is multiplicative with all other damage modifiers, including attacks that say they deal double damage. Typically, you roll damage dice twice for a critical hit and sum both results, along with doubling any flat modifiers. If this would require you to roll an inconveniently large number of dice, you can just multiply the result from your normal damage dice instead.
Regular Hits
If your attack result is at least as high as the target’s defense, but less than 10 higher than that defense, your attack is a regular hit against that target. It has its normal effect.
Exploding Attacks
When you make an attack roll, if you roll a 10 on the d10, the die explodes. This means you keep rolling until you get a number less than 10, then sum all of the rolls.