Omnath, Planar Ruler

If an elemental were to go to your graveyard,
instead conceal it
Trample, Reach, Deathtouch
Earth Consumer, Land Pulverizer 2
You may sacrifice {x} lands than give Omnath,
Planar Ruler {x} +1/+1 counters, activate this
ability only once per turn
{t}; Sacrifice {x} lands, then give all elementals you control {x} +1/+1 counters