Density Shift

When you touch an object or a creature, you can alter its density, either increasing or decreasing it. This spell does not affect magical objects.

Increase. When you increase the density of an object, its weight doubles and gains resistance to bludgeoning, piercing, and slashing damage. If the object is a weapon, the weapons damage increases by 1d4 but now loses the light property or, if already without the light property, has the heavy property. If the target is a creature, the creature, not including any held or worn items, doubles in weight, gains resistance to bludgeoning, piercing, and slashing damage, and has advantage to saving throws that knock it prone or forces it in an unwilling direction. If the creature is moved unwillingly in a direction without a saving throw, such as a Warlock's Repelling Blast, to move is reduced to half, rounded up. The creature's movement speed, however, is halved.

Decrease. When you decrease the density of an object, its weight decreases 50% and gains vulnerability to bludgeoning, piercing, and slashing damage. If the object is a weapon, the weapons now has the light property, if it did not already, or loses the heavy property, but has a 10% chance of breaking when hitting something. If the target is a creature, the creature, not including any held or worn items, has it's weight reduced to half, gains vulnerability to bludgeoning, piercing, and slashing damage, and has disadvantage to saving throws that knock it prone or forces it in an unwilling direction. If the creature is moved unwillingly in a direction without a saving throw, such as a Warlock's Repelling Blast, to move is doubled, rounded up. The creature's movement speed, however, is doubled.

If the target is an unwillingly creature, it must succeed a Constitution saving throw.

For each level spell slot used to cast this spell, you can choose 1 additional target.