Is not in middle of nowhere, it replaces the vague "a fixed number" for the english version. I think the description is clear now, if I add numbers after the text says "a fixed number" it will be more confuse.

>For example:

{Land Mine}

Randomly places four small areas of landmines on the battlefield which are only visible to the caster and creatures native to the terrain. It inflicts damage to any unit walking over it.

is replaced with:

{Land Mine}

Randomly places four small areas of landmines on the battlefield which are only visible to the caster and creatures native to the terrain. It inflicts %Y11 damage to any unit walking over it.

Which is the exact original formulation but with the damage value.