You're acting weird
The unit must be held in Reserve. Once it passes its Reserve Check, select a small based Hands unit of your choice in the Play Area. For each model in this unit, replace one of the models in the target enemy Hands unit with them (the specific model replaced is of your opponent's choice). This may be resisted by the selected model passing a Mind Check. If it passes, this unit loses a model instead. Continue to do this unit either there are no more models in this unit to be deployed or there are no more enemy models in the enemy Hands unit to replace.