Matt's Glistening Dragon

{1}{t}, Put a luck counter on Matt's Glistening Dragon.
{10}{t}, Sacrifice Matt's Glistening Dragon.
When Matt's Glistening Dragon enters the graveyard with a Luck Counter on it, you may exile it. If you do, you may search your library for any amount of dragon cards and put them onto the battlefield. They gain haste and trample until the end of the turn.