Showering with the fountain. That is a "forbidden play".
Friend-[CONT](RC):If you have another unit in the same column as this unit, that unit and this unit become "Friends".
[AUTO](RC):When this unit attacks a vanguard, if you have three or more other "Friends", this unit gets [Power] +5000 until end of that battle. If you have five or more, choose one of your rear-guards with the "Friend" ability not in the same column as this unit, and you may return it to your hand.