Here's another oversight. The original Confusion spell has 2 primary effects. The target(s) cannot take Reactions (which is very similar to the new Rattled condition), AND 1d10 needs to be rolled to determine the target(s) behavior every turn until they resist the spell. This secondary effect is completely missing from the spell description below.
1: The creature uses all its
Movement to move in a random direction. To determine the direction, roll a d8 and assign a direction to each die face. The creature doesn't take an action this turn.
2-6: The creature doesn't move or take
Actions this turn.
7-8: The creature uses its action to make a melee
Attack against a randomly determined creature within its reach. If there is no creature within its reach, the creature does nothing this turn.
9-10: The creature can act and move normally.
Here's the A5e version:
Confusion
You assault the minds of your targets, filling them with delusions and making them confused until the spell ends. On a successful saving throw, a target is rattled for 1 round. At the end of each of its turns, a confused target makes a Wisdom saving throw to end the spell’s effects on it.