A one-sided Stax piece for a single mana that also fuels life-gain decks, it's just something that has to be considered for every white deck, including any Selesnya+ brew that might be thinking about Brightglass GearhulkBrightglass Gearhulk
Like the cycling lands it can help you curve out even if you already have a good number of lands
The game plan is simple but brutally effective
There are 7 main types of cards in magic, Lands, Creature, Instants, Sorceries, Enchantments, Artifacts, and Planeswalkers
Creating as many goblins as you can to fuel Krenko is key, from Dragon Fodder to Mogg War Marshal, combined with haste enablers, and effects to make sure they connect (like the flavourfully named Goblin War Drums)