That means it won't mutate, it won't be able to do anything but have an enters-the-battlefield effect or maybe make use of counters
Arcades, The Strategist Defender Tribal Commander Deck
That also isn't accounting for any mana rock cast on earlier turns either
Creatures (2) Lands (21) Spells (37) 1 Stroke of Genius 4 Mana Drain 1 Counterspell 1 Vampiric Tutor 1 Mystical Tutor 1 Yawgmoth's Will 4 Force of Will 1 Diabolic Edict 1 Balance 1 Sol Ring 1 Regrowth 1 Mind Twist 1 Demonic Tutor 1 Time Walk 1 Ancestral Recall 4 Impulse 1 The Abyss 2 Seal of Cleansing 1 Obliterate 1 Kaervek's Torch 1 Black Lotus 1 Fact or Fiction 1 Mox Emerald 1 Mox Jet 1 Mox Pearl 1 Mox Ruby 1 Mox Sapphire Keeper was a relatively similar style of control deck to the popular The Deck Brian Weissman used to teach the world about the idea of card advantage. The biggest differences were typically adoption of The Abyss and use of black removal and burn, instead of Swords to Plowshares
With all of the Treasures, Food, Clues, Powerstones, Blood and token artifact dorks running around that's very doable, and drawing a card after scrying on a +1 on a four-drop 'walker is why she here on my first list
This also works when you investigate multiple times