Core:Attack Interaction

The most important Interaction is the Attack Interaction, which is used whenever a weapon, body part, or missile would come into contact with a target. The Attacker first makes an Attack Roll (1d20) against the target's armor class (AC). If the attacker is proficient with the ability they are using, they add their proficiency bonus to the roll. If this roll is equal to or greater than the target's AC (typically 10 + AV), the attack Hits. If the roll is less than the target's AC, the attack Misses. A natural 20 on the die is always a Hit, and a natural 1 is always a Miss. The consequence of a Hit is described in the "On hit" section of the ability that's used.

If the Hit is from a natural 20, then the attack is a Critical Hit and the effect of the ability "goes Critical". If this changes anything about the effect, then it's described in the ability's "On critical hit" section.

When making multiple Attacks in the same Turn with the same weapon, the Attacker takes an additional -5 to their Attack Roll for each Attack made beyond the first. This is called an Attack Penalty. For instance, if you Attack with the same weapon three times (using all three actions) in the same Turn, the first Attack has no Attack Penalty, the second has an Attack Penalty of -5, and the third has an Attack Penalty of -10. small weapons do not incur an Attack Penalty from multiple Attacks.

Any creature that is up may choose to be hit by an attack, even if the attack would normally Miss. This is called "Taking the Hit". They cannot choose to take a Critical Hit.

Multiple Attacks

The first attack you make in a given turn has no penalty to hit. Each subsequent attack you make accrues some cumulative attack penalty (AP) which will apply to future attacks made in the same turn. The value of the penalty that's added is the AP of the equipment or body part you attack with. Unless otherwise noted, an attack has an AP of -3. This is the AP for missile attacks as well as any other attack where an -3 isn't stated. Your attack penalty resets to 0 at the end of each turn (not just your own).

Lord Goobelthorp is wielding a claymore in two hands. The claymore has an AP of -4. The first attack they make with the claymore has no penalty to hit. If they make a second attack with the claymore in the same turn, that attack has a -4 penalty to hit. If they make a third attack with the claymore in the same turn, that attack has a -8 penalty to hit.

Kaflimbo is wielding a shortsword (AP of -2) in one hand and a longsword (AP of -3) in the other. They first attack with the shortsword which has no penalty. If they make a second attack using the longsword, it has a -2 penalty to hit. They can then attack with the shortsword again and it has a -5 penalty accrued from the first and second attack. If they want, they can then use Off-Hand Attack to then get in a fourth attack with the longsword that has a -7 penalty to hit.

Tizzy Snomblom has a war hammer in one hand and a tower shield in the other. The arm with the tower shield is also holding a dagger, although they cannot attack with it. The first attack they make with the hammer has no penalty to hit. If they make a second attack with the hammer in the same turn, that attack incurs a -4 penalty to hit. If they make a third attack with the hammer in the same turn, that attack incurs a -8 penalty to hit.

Flaxer Gogo has a longsword (AP of -3) in one hand, a dagger (AP of -1) in the other, and a buckler shield strapped to the arm with their dagger. The first attack they make with the longsword has no penalty to hit. Since they're using is buckler shield (and not some larger type of shield), they can also make a second attack with the dagger in the same turn with a -3 penalty to hit. If they make a third attack with the longsword or the dagger in the same turn, that attack has a -4 penalty to hit.

Attack Interaction Flowchart

Complete Attack and Block Interaction Routine