Nottomoro, Hollow Shepherd

Whenever an elemental creature you control dies, put a seed counter on Nottomoro, Hollow Shepherd.
Nottomoro, Hollow Shepherd gets +1/+1 for each seed counter on it.
At the beginning of your upkeep, you may remove X seed counters from Nottomoro, Hollow Shepherd, and put an elemental creature card from your graveyard into play with converted mana cost equal to X.