Zemogra, Animate Despoiler

When Zemogra, Animate Despoiler enters the battlefield, create a 1/1 black and green Elemental creature token for each land card in
your graveyard.
During your end step, gain control of all elementals.
Whenever 1 or more lands is put into a graveyard, put a +1/+1 counter on each elemental you control.