Kreold, Phyrexian Converter

{t}, Sacrifice another creature: Search your
library for an artifact or creature with converted
mana cost equal to 1 + the sacrificed creature's
converted mana cost or less, reveal it, and put it
into your hand.
{r}{r}{r}, Discard an artifact or creature card:
Deal damage to target creature or player equal to
the discarded card's converted mana cost.