Coat of Arms, Standardize

[MisterJH]

How would {coat of arms} interact with {standardize} if one happened to choose.. Changeling? Say there are 5 creatures.. Would each creature get +4/+4 times however many creature types magic has ever seen? Like wth

[Keyeto]

Each changeling would get +1/+1 for each other changeling. Coat of arms counts how many creatures share a type with other creatures, not how many types they are.

[MisterJH]

It says '+1/+1 for each creature type shared' and changelings are ever creature type... There are several applications where changeling includes every type and gets benefits due to its changeling status, despite not saying 'human' or something. So my logic goes that if a changeling will receive a boost from goblins using {coat of arms} and be eligible for {gobling grenade} and such, and at the same time receive boosts from humans, why wouldnt it receive boosts from 'goblins, humans, kithkin, centaur, zubara....' Since it is all of these types??

[MisterJH]

To be clear, say i have 2 changelings. They are every creature type at all times. This means they are humans. Each will get +1/+1. They are also rebels. Again, +1/+1 each. Additionally they are knights, which equals another +1/+1... What stops this from working when a changeling would still get +2/+2 if there was one goblin and one human with a {coat of arms} in play?

[Keyeto]

Not quite, it says creatures get +1/+1 for each CREATURE that shares at least one type with it. It cares only about the creature count, and whether or not it shares at least one type with another creature.
Now, if it said that creatures get +1/+1 for each creature type shared amongst creatures you control, it would be different. Then, it would count the types. But that is not the case, it checks to see if a creature shares at least one type with another, and if it does, powers them up.
Also, you wouldn't be able to choose changeling in the first place, since its a static ability, and not a creature type.

RESOLVED