Riches of the Ascendant

Whenever a creature dies, put a loot counter onto Riches of the Ascendant.
At the beginning of you endstep, search your
library for a creature with converted mana cost
equal to or less than the number of loot counters
on Riches of the Ascendant and put it onto the battlefield.
Remove five loot counters: return target creature
from your graveyard to the battlefield tapped.