You cause a creature with arms and/or legs that you can see within range to shorten or stretch its limbs for the duration. If the target is unwilling, it can make a Constitution saving throw. On a success, the spell has no effect.
Shorten. The target's walking speed decreases by 15 feet and it makes weapon attacks with disadvantage.
Stretch. The target's walking speed increases by 15 feet and its reach with melee weapon attacks doubles.* - (a tiny jar of jam)