Dylan, Ecomaniac

Landfall — Whenever a land enters the battlefield
under your control, put a +1/+1 counter on each of
up to two target lands.
{4}{g}{g}: Target land you control becomes a 0/0 elemental creature in addition to its other types. It's
still a land.
Whenever you attack, if a land you control is attacking, up to one target land you control gains
trample until end of turn.