This has a nice Exploit trigger, as it lets you trade whatever you Sacrifice for a full card, while still adding a 5-mana body to the board, and thats going to do a whole lot to stabilize you or pull you ahead
Wizards of the Coast Japan
Going Infinite If you dont go over the top with mana, this deck also offers a wide range of different combos

Arguel's Blood Fast Bandit's Talent Black Market Connections Braids's Frightful Return Braska's Final Aeon Call of the Ring Chains of Mephistopheles Coercive Impetus Construct a Cosmic Cube Dark Prophecy Demonic Covenant Demonic Lore Discreet Retreat Dockside Chef Down, Down to Goblin-town Echo of Death's Wail Elspeth's Nightmare Erebos, Bleak-Hearted Erebos, God of the Dead Forbidden Crypt Gravestorm Greed Greed's Gambit Grisly Transformation Hateful Eidolon Infernal Scarring Infernal Tribute Krovikan Fetish Krovikan Plague Lich Lich's Mastery Lithoform Blight Lord Skitter's Blessing Midnight Oil Mindless Conscription Mornsong Aria Necrodominance Necromancer's Stockpile Necropotence Nihilistic Glee Null Profusion Oath of Lim-Dl Obsessive Pursuit One Ring to Rule Them All Origin of Black Widow Out of the Tombs Phyrexian Arena Phyrexian Etchings Raiders' Spoils Robot Domination Rune of Mortality Scavenged Weaponry Scion of Halaster Scourgemark Sicken Soulreaper of Mogis Summon: Anima Tainted Well Teval's Judgment The Cloning of Shredder The Creation of Avacyn The Cruelty of Gix The Death of Gwen Stacy The Eldest Reborn The House Grows Hungry The Long Reach of Night The Revelations of Ezio The Rise of Sozin The Toymaker's Trap Tymaret Calls the Dead Underworld Connections Vampiric Rites

But having seen the ease with which Standard and Pioneer decks can reliably cast these tremendous threats on (or even ahead of) curve, it seems colored mana no longer fulfills its traditional role as a deck-building restriction
A Dina, Soul Steeper deck usually revolves around gaining life and using the lifegain to damage opponents