Fires of the Remembered

Offering(Before casting Fire of the Remembered you
may search your library for a creature card and exile
it, if you do, add {r} or {w}equal to that creatures converted mana cost in any combination to your mana pool.)
Fire of the Remembered deals damage to each creature equal to their power.
Many soldiers have given their lives for liberation,
others may forget, but leaders always remember.
-Aurelia, Warleader