Knusper Stormtribe Avenger

{r}{g}, {t}Sacrifice a creature, deal damage equal to
the sacrificed creatures power to any target.
{t}search your library, graveyard, or exile for
Knisper, Stormtribe Guardian or Knasper, Stormtribe Protector, Reveal it and put it into
your hand, then shuffle Knusper, Stormtribe
Avenger into your library.
If you control Knisper, Stormtribe Guardian and Knasper, Stormtribe Protector: {t}add {r}{g} to
your mana pool.