all other face-up monsters currently on the field have their effects negated, also their ATK/DEF become their original ATK/DEF, and if you do any of these, during the Battle Phase this turn, each time an opponent's card effect resolves, this card gains 1000 ATK until the end of the Battle Phase, also, it can make a second attack during each Battle Phase this turn
Once per turn, during your End Phase: You can send 1 "Thunder Dragon" card from your Deck to the GY
It has higher playability than Lich's Mirror, so I'm giving it the edge here, but it isn't fantastic
Prank-Kids Battle Butler can return a Prank-Kids card back to the hand from the GY
Note, that while technically more expensive, buying the four pack of boosters is still more cost effective as you ultimately save on delivery, and that would probably be my recommendation for anyone looking to pick up a few packs without any stress