Gravelord Nito

Deathtouch
At the beginning of your upkeep return five creatures from your graveyard to the battlefield, these creatures become skeletons in addition to their other types. Skeletons will regenerate when Gravelord Nito is on the battlefield.
{4}{b}{b}{b}: Put Miasma counters on two creatures, whenever these creatures die return to the battlefield under Gavelord Nito.