Accuracy

Weapons have Precision. When attacking, you roll 1d20 + Weapon's Precision against an opponent's 1d20 roll. If you exceed their roll, you hit them. Enemies can gain evasion to empower their roll in this interaction.

Spells have precision if they aren't AoE as well. You roll a Perception Roll against your target's Perception unless your target is willing to take the effects of the spell.