Reduce

You cause a creature or an object, that, isn't
worn or carried, and you can see within 30ft
of you, to halve its size in all dimensions. If
they are not willing, they may make a
constitution saving throw against your spell
save DC (8+proficiency+WIS). If they succeed,
they do not shrink. If the spell does take effect
however, they grow one size category larger,
they get disadvantage on all strength checks, and
their weapons shrink along with them dealing
1d4 less damage.