Copper Dragon

(Copper Dragon is a colorless creature)
Flying
When Dragon enters the battlefield, you may
exile target creature you control. Return it to the
battlefield as an aura attached to Copper Dragon.
Copper Dragon gets +X/+0 where X is the
exiled creature's power.
"Send a Kender up on a dragon and that will be the
end. We could just hand the Highlord the keys to the
city." - Flint Fireforge