Dragon's Call

Dragon's Call enters the battlefield with X storm
counters on it. Whenever a creature is sacrificed,
a Dragon enters the battlefield or a player loses
life, put a storm counter on Dragon's Call.
Sacrifice Dragon's Call: Search your library for
a Dragon card and put it on the battlefield. It
gains haste and trample until end of turn.
Shuffle your library. Activate only if there are
8 or more storm counters on Dragon's Call.