Omnath, Locus of Eternity

Devoid, Annihilator 4, indestructible, ward 4
When Omnath, Locus of Eternity enters the battlefield or attacks, exile up to 4 target lands
Whenever someone taps a land for mana, put a +1/+1 counter on Omnath, Locus of Eternity
Landfall - Whenever a land enters the battlefield under your control, create a 5/5 colourless eldrazi elemental creature token with trample