Kudo does not work properly with CDAs.
I controlled a Kudo, King among Bears, which says "Other creatures have base power and toughness 2/2 and are Bears in addition to their other types." My opponent played a Bonny Pall, Clearcutter, which reads in part "When Bonny Pall, Clearcutter enters the battlefield, create Beau, a legendary blue Ox creature token with 'This creature’s power and toughness are each equal to the number of lands you control.'"
What happened in the game was that my opponent's Beau token was a 12/12, since they controlled 12 lands. This seems to reflect that both abilities were coded as effects that set power or toughness to a specific value, meaning that they would both apply in layer 7b, and Bonny Pall's effect would have a later timestamp and make the token a 12/12.
HOWEVER, this is not how this interaction should work. According to rule 604.3a, "A static ability is a characteristic-defining ability if it meets the following criteria: (1) It defines an object’s colors, subtypes, power, or toughness; (2) it is printed on the card it affects, it was granted to the token it affects by the effect that created the token, or it was acquired by the object it affects as the result of a copy effect or text-changing effect...." This shows us that the ability that sets Beau's power and toughness is in fact a characteristic-defining ability, and per rule 613.4a, should be applied in layer 7a, which is before Kudo's ability applies in layer 7b, and therefore the Beau token should have been a 2/2.
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