Guide to Rolling

For the Obsidian Portal character sheets, you roll a d20 and add the number listed with that ability. On OP, your ability modifier and proficiency bonus have already been added together.

Attack Rolls

Melee Attacks

Roll a d20 + your strength modifier + your proficiency bonus if you are proficient with the weapon you are using.
Caveat: If you are using a weapon with the finesse trait, you may substitute your dexterity modifier instead of your strength modifier

Finesse Weapons

  • Dagger
  • Katana
  • Quarterstaff
  • Rapier
  • Scimitar
  • Short Sword
  • Spiked Chain
  • Whip

Ranged Attacks

Roll a d20 + your dexterity modifier + your proficiency bonus if you are proficient with the weapon you are using.

Caveat: If the weapon has the thrown trait, use your strength modifier instead.

Spell Attacks

Spells that require you to hit: Most damaging spells require you to hit the target to deal damage. Examples: Eldritch Blast, Firebolt, Witch Bolt
Roll a d20 + your spellcasting trait’s modifier + your proficiency bonus

Spellcasting Traits:
WIS: Cleric, Druid, Ranger
INT: Arcane Trickster (Rogue), Eldritch Knight (Fighter), Wizard
CHA: Bard, Paladin, Sorcerer, Warlock

Other spells don’t require you to roll to hit. Examples: Magic Missle, Shatter, Protection from Evil, Cure Wounds

Caveat: For a sorcerer, each spell of 1st level or above requires you to roll a d20 on the Wild Magic Surge table if your spellcasting background is Wild Magic. It is good practice to always roll an extra d20 when casting a spell, just in case it is needed for Wild Magic surges.

Damage Rolls

Melee Damage

Roll the damage die for the applicable weapon + your strength modifier.
Caveat: If you are using a weapon with the finesse trait, you may substitute your dexterity modifier instead.

Ranged Damage

Roll the damage die for the applicable weapon + your dexterity modifier.

Spell Damage

Roll the dice as described by the spell. You don’t add anything unless you have a special ability such as a Warlock invocation.

Saving Throws

The DM will tell you what type of saving throw to make.

Roll a d20 + the stated ability modifier + your proficiency bonus if you are proficient in that type of save.

Opposed Saving Throws

Sometimes you need to provide the difficulty level of an opponent’s saving throw. This is most commonly used to save against the effects of your spells.

Your save DC is: 8 + the applicable ability modifier + your proficiency bonus

For spells, the applicable ability modifier is your spellcasting trait. See the above list.

Ability Checks

The DM will tell you what type of ability check to make.

Roll a d20 + the ability modifier for that type of skill + your proficiency bonus if you are proficient in that ability.

Guide to Rolling

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