Soul Harvester Spiritomb

Shining (This creature is Shiny. Shining creatures
enter the battlefield with an additional +1/+1 counter
for each color of mana spent to cast it.)
Whenever another creature you control dies, put
a soul counter on Soul Harvester Spiritomb.
Then when it has eight or more soul counters,
remove them and put all creature cards from
your graveyard onto the battlefield.