This deck is coming together, but lacks protection. The problem with adding protection like Apostle's Blessing, is that it takes away from the landfall game plan. My favorite combo is Harrow + Temur Battle Rage . Rancor is in here for adding trample to the non-trampling creatures, the +2/+0 is merely a bonus, plus it comes back. For a more budget option to the Rancor, you could use Messenger's Speed.

EDIT: I am currently trying out Vorrac Battlehorns instead of the much more expensive Rancor, the Battlehorns have the added benefit of only a single chump blocker.