Start a Fire

Target creature gets a fire counter.
(When a creature has a fire counter, it gets -1/-1 for
each fire counter on it, and during each upkeep, you
put one fire counter on each card with a fire counter on
it, then another target creature gets one fire counter)
Blood Ritual {p/r}{p/r}{p/r}{p/r}{p/r}{p/r}{p/r} —
(pay {p/r}{p/r}{p/r}{p/r}{p/r}{p/r}{p/r} to cast this from exile or
your graveyard, in addition, sacrifice a creature
and pay 3 life)