Hoard Jewel

{t}: Add {r}. Put a +1/+1 counter on Hoard Jewel.
Hatch (When this Egg dies, search your library for a
Dragon card. You may cast it by paying its mana
value reduced by the number of counters on this Egg.
Then shuffle your library.)
Whenever one or more creatures an opponent
controls deal combat damage to you, that player
draws a card and gains control of Hoard Jewel.
Untap it.