Having access to untapped lands means your early turns are spent developing your board instead of waiting for your mana base to cooperate with you
In a world of terror, lightning bolt and swords to plowshares, I really can't imagine it being that big a problem
Rhuk, Hexgold Nabber Equipment and voltron decks have an interesting relationship with goblins, such as how one creature is usually greedy and wants all your equipment making Rhuks triggered ability rather clunky
Even if you are in a non-US country that can have these shipped to you, the extra fees from customs and the like can make them even more outrageously expensive than you'd have liked
After that, filling and foraging away the graveyard will keep squirrel armies beefed up and ready for menacing swings
The first ability is definitely a bit tame, only discounting one spell per turn