You often fuel combo decks or control decks with it
If you do, draw X cards, then mill X cards, where X is that creature's power
Both Gods are on-color and come down before Siegebreaker on the curve, too, so the synergy lines up perfectly
Sacrifice outlets are also too diverse in their function to be easily switched off by a single counter card unless its incredibly specific (Angel of Jubilation or Yasharn, Implacable Earth come to mind)

Be very careful when trading for the following cards on this list: Tropical Island Temple Garden Stomping Ground Overgrown Tomb Scared Foundry Breeding Pool Misty Rainforst Celestial Colonnade Flooded Strand Arid Mesa Wasteland Inkmoth Nexus Elspeth Sun's Champion Tarmogoyf Cavern of Souls Scalding Tarn Hallowed Fountain Polluted Delta Surgical Extraction Sol Ring Underground sea Maesh Flats Reflecting Pool Mutavault Wooded Foothills Windswept Health Watery Grave Godless Shrine Nykthos, Shrine to Nyx Savannah Blood Crypt Verdant Catacombs Kalonian Hydra Avacyn, Angel of Hope Thassa, God of the sea, Jace, Architect of Thought Swords to Plowshares Chalice of the Void Goblin guide it that betrays sword of war and peace sword of fire and ice purphoros god of the forge sun titan sensei's divining top demonic tutor elspeth knight-errant thoughtseize pernicious deed sword of feast and famine goblin lackey goblin pilcdriver inquistion of kozilek engineered explosives kokusho the evening star bonfire of the damned ral zarek stoneforge mystic lona shield of emeria spellskite karn liberated tundra path to exile figure of destiny Ather Vial Vampiric Tutor Snapcaster Mage Academy Ruins Batterskull Forcc of Will Leyline of Sanctity Intuition Sphinx's Revelation Reanimate New...er News

They seem very strong, but drastically increase the price of the deck, and I'm not entirely sure they are better than what we're already doing