A thick blanket of crackling lightning fills a 20-foot-radius sphere centered on a point you choose within range. The sphere spreads around corners. The sphere remains for the duration.
When the area appears, each creature in it must make a Constitution saving throw. A creature has disadvantage on this saving throw if it is wearing armor made of metal. On a failed save, a creature takes 4d8 lightning damage, can't take reactions until the end of its next turn, has disadvantage on Dexterity saving throws until the end of its next turn, and has its speed reduced by 5 feet until the start of its next turn. On a successful save, a creature takes half as much damage and suffers no other effects. A creature must also make this saving throw when it enters the spell's area for the first time on a turn or ends its turn there.
At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.
* - ((iron filings, which the spell consumes, and a lodestone) )
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