Squawkroaster 

Creature — Elemental
Double strike
Vivid — Squawkroaster's power is equal to the number of colors among permanents you control.
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Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Chameleon Spirit 92%
$0.24#24029
"this card's power and toughness are each equal to the number of permanents of the chosen color your opponents control."
Crowd of Cinders 83%
$0.12#27408
"this card's power and toughness are each equal to the number of black permanents you control."
Faerie Swarm 83%
$1.07#17565
"this card's power and toughness are each equal to the number of blue permanents you control."
Regal Bunnicorn 83%
$0.70#6155
"this card's power and toughness are each equal to the number of nonland permanents you control."
Kraven, Proud Predator 82%
$0.13#18202
"this card's power is equal to the greatest mana value among permanents you control."