If you cast this card for its evoke cost, you may put the sacrifice trigger and the regular enters-the-battlefield trigger on the stack in either order. The one put on the stack last will resolve first.
Trample
When this creature enters, destroy target land.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
(You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)