Naliirs Spiritual Spark

Target opponent reveals his or her hand. If a
dragon is in there hand, put it onto the
battlefield under your control. If there are
no dragons in their hand, then that
opponent exiles all creatures and
enchantments on the battlefield and they
come back to the battlefield under your control.
"She can now walk the planes of New Phyrexia."
-Islier, Water of the Sky