Spells deal damage, heal, and grant special abilities to heroes. To Cast a Spell, the target(s) of the spell (there may be more than one) must be within its listed range. You must perform the Skill Check listed for the spell, meeting or exceeding its number. If the check is successful, any Focus from unused dice is gained immediately and can be used to perform the spell’s effect (). Focus from unused dice is gained before the spell’s effect is resolved, not after.
In this example, you must succeed with an Intellect Check of 7, and the target must be in a pathway no more than 2 rooms away. If successful you must spend 6 to deal 4 damage to the target.