Illusions & the gameplay loop

My player wants to use exclusively Illusions in combat? Is there a true illusions slot true might Such is A wizard can select a spell modified by a metamagic feat to prepare in his school slot, but it uses up a higher-level spell slot true kult slot When a character casts a spell, he or she expends a slot of that spell's level or higher, effectively filling a slot with the spell truth behind illusions,

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