Happy Pony and Dreamy Pony

Mutate {3}{w}{u} (If you cast this spell for its mutate
cost, put it over or under target non-Human creature
you own. They mutate into the creature on top plus all
abilities from under it.)
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Vigilance.
Whenever this creature mutates, create a token
creature that is copy of a creature you control,
which is an artifact in addition to its other types.