# Can I choose each time I cast a rote block whether the effect works as block strength, Armor, or a zone border?

As a wizard with Great (+4) Conviction and Discipline, I can have the following rote spell:

Type: Earth evocation, defensive block
Power: 4 shifts
Duration: One exchange


Can I choose each time I cast the spell whether the effect works as block strength, Armor, or a zone border (YS, p. 252)? A rote spell "always manifests in exactly the same way each time" (YS, p.257), but I'm not entirely sure what counts as "the parameters of the spell".

## How you spend Shifts, including if they're applied as a Block or Armor, constitute 'parameters'.

Your Rote must either be an earthen Armor or attempt to fully Block a type of action. You can always roll for the other, or establish a second Rote for the other effect.

Parameter isn't a defined game term, so defaulting to general English,

a numerical or other measurable factor forming one of a set that defines a system or sets the conditions of its operation

We can see that measuring your Block or Armor will change and as you noted (emphasis added),

Any change in the parameters of the spell disqualifies it from being a rote.