Goblins is a fast tribal aggro deck that wins through Goblin Lackey and Goblin Warchief enabling early, hasted threats like Goblin Piledriver and Siege-Gang Commander. Your primary plan is to Swords to Plowshares their key creatures, then stabilize behind Wrath of God and Decree of Justice tokens. Hydroblast and Blue Elemental Blast come in as efficient answers to Goblin Piledriver, Siege-Gang Commander, and any burn they might produce, while Circle of Protection: Red and Warmth buy crucial life against their red damage. Annul and one Phyrexian Furnace are cut as their targets are few, and Humility is too slow against their explosive draws; a Mana Leak and Prohibit are trimmed since their low mana curve will frequently leave you unable to reliably counter on turns 1-2. Standstill can still be explosive here — deploying a Mishra's Factory or Faerie Conclave and then casting Standstill forces them into difficult decisions between drawing you cards or letting your man-lands attack.