All of these will have their own purpose, and some can be stronger than others depending on what youre looking for, so dont take the self-mill term too literally
PSA 10 rate estimated 20-30% for well-centered copies

[Commander] 1 Malcolm, Keen-Eyed Navigator 1 Breeches, Brazen Plunderer [/Commander] [Creatures] 1 Blisterspit Gremlin 1 Imagecrafter 1 Amoeboid Changeling 1 Electrostatic Field 1 Firebrand Archer 1 Ghitu Chronicler 1 Goblin Electromancer 1 Reckless Fireweaver 1 Thermo-Alchemist 1 Vodalian Arcanist 1 Welder Automaton 1 Embraal Gear-Smasher 1 Gelectrode 1 Goblin Matron 1 Guttersnipe 1 Lobber Crew 1 Lore Drakkis 1 Nettle Drone 1 Warmonger 1 Havoc Jester 1 Mistform Mutant [/Creatures] [Sorceries] 1 Faithless Looting 1 Maximize Altitude 1 Maximize Velocity 1 Strike It Rich 1 Flood of Recollection 1 Glimpse the Cosmos 1 Mind Spring 1 Scour All Possibilities 1 Tormenting Voice 1 Winged Words 1 Deep Analysis 1 Mystic Retrieval 1 Step Through [/Sorceries] [Instants] 1 Expedite 1 Opt 1 Trickery Charm 1 Abrade 1 Blades of Velis Vel 1 Desperate Ravings 1 Into the Roil 1 Negate 1 Radical Idea 1 Run Away Together 1 Standardize 1 Think Twice 1 Thrill of Possibility 1 Wings of Velis Vel 1 Oonas Grace 1 Volatile Claws 1 Chemisters Insight 1 Hieroglyphic Illumination [/Instants] [Artifacts] 1 Runed Stalactite 1 Amorphous Axe 1 Fire Diamond 1 Prophetic Prism 1 Sky Diamond 1 Spell Satchel 1 Captains Hook 1 Commanders Sphere [/Artifacts] [Enchantments] 1 Mistform Mask [/Enchantments] [Lands] 20 Island 17 Mountain [/Lands] [/Deck]

The card draw clause pretty much guarantees that youll never run out of auras to play (assuming youre building your deck with lots of them), and the +2/+2 clause means that youll have a giant creature to attack your opponent with
One Piece Card Game - Inherited Will [OP-13] (Pack)
Perhaps most importantly, control decks typically play few creatures of their own, so an effect that reads as being symmetric is hardly symmetric at all