Historical Rules · 7 August 2020
Rule 607.2h
Official source text from the 7 August 2020 Rules release
If an object has a kicker ability printed on it and an ability printed on it that refers to whether that object was kicked, those abilities are linked. The second refers only to whether the intent to pay the kicker cost listed in the first was declared as the object was cast as a spell. If a kicker ability lists multiple costs, it will have multiple abilities linked to it. Each of those abilities will specify which kicker cost it refers to. See rule 702.32, “Kicker.”