All That Remains

When this enchantment enters the battlefield, put a -1/-1 counter on {x} target creatures with flying.
At the beginning of each end step, put a -1/-1 counter on each creature with a -1/-1 counter.
Whenever a creature with a -1/-1 counter dies, create a Treasure token for each -1/-1 counter on it.
{p/b}{p/w}: Put a death counter on target creature with a -1/-1 counter. (If a creature with a death counter is to be put into the graveyard, exile it instead.)

"Here lie dragons slain, here lie ric