Goy'rhu, the Green Dragon

Immortal (Spells and abilities cannot reduce this
creature's toughness less than 1)
Whenever a land enters the battlefield under
your control put a +1/+1 counter on Goy'rhu,
the Green Dragon.
{3}, Remove X +1/+1 counters from Goy'rhu:
Exile Goy'rhu and return it transformed with X loyalty counters on it.