> APPRENTICE: Summon thirty two gaming chairs.

They can't even summon one, bucko. Sure the APPRENTICE has mana and the stats for the spell, but they need a Hand-carved Ball to summon it. And they don't have one, let alone thirty two!
> APPRENTICE: Read your book to learn SUMMON WATER.

Ah, you misunderstand! They already know how to "summon" water. BABBLER'S BROOK does that. This is a list of spells they already know about.
Some spells require extra items or ways to cast them (for example, summoning spells require an item and a cast phrase), but BABBLER'S BROOK is pretty straightforward, thankfully!

The APPRENTICE gives an example and casts BABBLER'S BROOK.

The WIZARD'S APPRENTICE'S WET FLOOR.
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VISIT "THE WIZARD TOWER" OR AS I CALL IT "WIZARD TOWER" IN THE ADVENTURE SECTION BECAUSE I MAKE IT