In this rule

Historical Rules · 20 September 2024

Rule 702.33f

Official source text from the 20 September 2024 Rules release

Objects with more than one kicker cost may also have abilities that each correspond to a specific kicker cost. Those abilities contain the phrases “if it was kicked with its [A] kicker” and “if it was kicked with its [B] kicker,” where A and B are the first and second kicker costs listed on the card, respectively. Each of those abilities is linked to the appropriate kicker ability.

Find this number in the current Rules