The goal here is to start the game with Urabrask's forge and three lands in your starting hand, you have creatures with reach to handle flying and several ways to add more oil counters to the Forge.

the bounce lands are to return the Sphere back to your hand so it can give more oil counters, you've also got the Furnace Skullbomb to add oil counters along with magmatic sprinter and Churning Reservoir to add them every turn.
the green enchantment combined with Urabrask's forge gives insane amounts of +1/+1 counters to some other creatures to have more than just the Horror tokens dealing large amounts of damage and given that The Forge is an artifact its harder to remove then a creature and won't be destroyed by most boardwipes.

you've also got basilisk collar to give your very large creatures Lifelink so that you don't die in the meantime.