You can then flicker this card with something like a Cloudshift to get all the creatures back or use it as protection against a board wipe
This rule correction also applies to the HeiHei Boat Snack League Promo
Tempo decks, and aggro decks in general, often cant keep up on card parity as the game goes on and your spells get subjectively weaker
On the plus side, it also lets you proliferate: an effect that can be worth a few mana in itself depending on the board state
"Valkyrion the Magna Warrior" being adapted into the Fusion Monster "Valkyrion the Unity Warrior", and "Harpie Lady Sisters" to the Maximum Monster of the same name), or outright turned into those types themselves (e.g
Trafalgar Law (Beginners Deck Party [ST-23] - [ST-28] Participation Pack) (OP09-069) One Piece Promotion Cards Trafalgar Law (Beginners Deck Party [ST-23] - [ST-28] Participation Pack) (OP09-069) One Piece Promotion Cards Bandai [On Play] Look at 4 cards from the top of your deck