Rule 700.7 · General

If an ability uses a phrase such as “this [something]” to identify an object, where [something] is a characteristic or other quality, it is referring to that particular object, even if it isn’t the appropriate quality at the time.

Example: An ability reads “Target creature gets +2/+2 until end of turn. Destroy that creature at the beginning of the next end step.” The ability will destroy the object it gave +2/+2 to even if that object isn’t a creature at the beginning of the next end step.