Who needs Worlds when you have SPEED?
Synchro Cracker
Normal Spell Card
(1) Target 1 Synchro Monster you control; return it to the owner’s Extra Deck, and if you do, destroy all face-up monsters the opponent controls whose attack is equal or lower than the Original ATK of that Synchro Monster
Speedroit Mencoat
WIND/Machine
Level 4
100/2000
(1) When an opponent’s monster declares a direct attack: you can Special Summon this card in face-up Attack Position from your hand, and if you do, all monsters the opponent controls to Defense Position.