This card could be used in a Gladiator Beast Deck since they're always switching out at the end of the Battle Phase.
However cards that can be activated in the damage step (like Shrink or Rush Recklessly) may give your opponent less opportunity to counter your card.
Use this on an opponent's monster before activating Magic Cylinder for 1000 more burn damage.
Use this on an opponent's monster and then activate Fiery Fervor to double your monsters attack.
The attack boost this gives is better than Rush Recklessly, but it can be argued since "Rush Recklessly" can be chained during anytime during a turn (including the damage step) that it may not be a superior card.