Seeker's Trinket

Seeker's Trinket enters the battlefield with three
charge counters on it.
2, {t}: Draw two cards, then discard two cards
unless you discard an artifact card and remove a
charge counter from Seeker's Trinket.
Sacrifice Seeker's Trinket: Return target artifact
card from your graveyard to your hand. Activate
this ability only if Seeker's Trinket has no charge
counters on it.