(You may put the top two cards of your library into your graveyard.) Fathomless descent Enchanted permanent gets -X/-0, where X is the number of permanent cards in your graveyard
It might not be as strong as Blighted Agent, but playing this on turn 1 into two Might of Old Krosas and a Mutagenic Growth have enabled many a turn-2 kill, and its solid even without the nuts
The card is still owned by you
Once they actually have access to a hefty mana pool, White decks can be a real menace, with access to some of the best protection, Exile, and Enchantment effects in the whole game

Ambling Stormshell Brainstorm Crow Storm Dragonstorm Forecaster Dreadful as the Storm Echo Storm Eye of the Storm Flusterstorm Gigastorm Titan Mouth of the Storm Radstorm Roiling Dragonstorm Rooftop Storm Runescale Stormbrood Sea Gate Stormcaller Siani, Eye of the Storm Sire of the Storm Siren Stormtamer Storm Crow Storm Elemental Storm Fleet Aerialist Storm Fleet Negotiator Storm Fleet Spy Storm Sculptor Storm of Forms Storm of Saruman Stormbound Geist Stormchaser Drake Stormchaser's Talent Stormcloud Djinn Stormcloud Spirit Stormkeld Prowler Stormrider Spirit Stormscape Apprentice Stormscape Battlemage Stormscape Familiar Stormscape Master Stormsurge Kraken Stormtide Leviathan Stormwatch Eagle Stormwing Entity Sudden Storm Thryx, the Sudden Storm Volatile Stormdrake Whirlwing Stormbrood Windstorm Drake ther Storm