If a Zombie Synchro Monster(s) is Special Summoned, except from the Extra Deck, even during the Damage Step: You can apply 1 of the following effects. You cannot apply that same effect of "Mayakashi Mayhem" for the rest of this turn.
• Draw 1 card.
• Set 1 "Mayakashi" Spell/Trap directly from your Deck, except "Mayakashi Mayhem".
• Send the 1 monster with the lowest ATK your opponent controls to the GY (your choice, if tied).
• Inflict 800 damage to your opponent.
You can only activate the effect of "Mayakashi Mayhem" once per Chain.