Kalthus, Dead Shore Scavenger

Whenever you cast a spell, put the top card of
your library into your graveyard.
Exile a card from your graveyard: You may cast
a card from your graveyard with converted mana
cost equal to or less than the exiled card's
converted mana cost. Activate this ability only
twice per turn, on your turn.
"Trinkets, valuables. All shiny, all mine."