Gogliosaur Exterrus

At the beginning of your upkeep, Gogliosaur
Exterrus matures. (Put a +1/+1 counter on it,
if an you or an opponent controls a creature with
greater power.)
{u}{g}{c}, discard Gogliosaur Exterrus: target land
loses other abilities and gains "{t}: add {u}, {g}, or
{c}" for as long as Gogliosaur Exterrus remains in
your graveyard.