Castle in the Clouds

Flying, everlasting.
When another creature with everlasting you
control dies, you may exile it. If you do, create a
token that is a copy of that creature, except it has
base power and toughness 4/4.
When a creature without everlasting you control
dies, you may exile it. If you do, create a token
that is a copy of that creature, except it has base
power and toughness 1/1.