It's a subtle, but powerful, ability

Rarity: R Cost: 2BB Card Type: Sorcery Artist: Johann Bodin Name: Geth's Summons Finish: Regular Card Number: 049 Set Name: Commander: Phyrexia: All Will Be One Related Products Wurmquake Commander: Phyrexia: All Will Be One Light Play, English 1 In Stock Light Play, English 1 In Stock Light Play, English 1 In Stock Tangleweave Armor - Extended Art Commander: Phyrexia: All Will Be One Light Play, English 9 In Stock Light Play, English 9 In Stock Light Play, English 9 In Stock Necroblossom Snarl Commander: Phyrexia: All Will Be One Light Play, English 1 In Stock Light Play, English 1 In Stock Light Play, English 1 In Stock Kemba's Banner Commander: Phyrexia: All Will Be One Light Play, English 1 In Stock Light Play, English 1 In Stock Light Play, English 1 In Stock Jor Kadeen, the Prevailer Commander: Phyrexia: All Will Be One NM-Mint, English 4 In Stock NM-Mint, English 4 In Stock NM-Mint, English 4 In Stock Light Play, English 1 In Stock Putrefy Commander: Phyrexia: All Will Be One Light Play, English 1 In Stock Light Play, English 1 In Stock Light Play, English 1 In Stock Phantom General Commander: Phyrexia: All Will Be One NM-Mint, English 4 In Stock NM-Mint, English 4 In Stock NM-Mint, English 4 In Stock Forgotten Cave Commander: Phyrexia: All Will Be One NM-Mint, English 1 In Stock NM-Mint, English 1 In Stock NM-Mint, English 1 In Stock Light Play, English 1 In Stock

So what creature is this
Think of it like this: Dredge decks need to dump cards in the graveyard to trigger effects like Narcomoeba, so self-mill more or less equals drawing cards