Oskar N. Reteep, Bookseller

Whenever you draw your second card each turn you
may exile up to one artifact card from your hand and
put a stockpile counter on it.

Revolt {t}: Return all artifacts with stockpile
counters on them to the battlefield under you
control. Add {c}{c}{c}{c}{c} to your mana pool.
Activate this ability only if a creature you control
left the battlefield this turn.

Appreciator of the neat the strange and/ or the yummy