Worm Toxin Mutant, Venom Stinger

:When a card is put into your opponent's damage zone during your turn, this unit gets +10000 until end of turn. :When it attacks, [ 1 & put a rear-guard into your soul], until end of that battle, even if a trigger unit is revealed for your opponent's damage check, that trigger effect does not activate, and you perform the same trigger effect as that card's trigger effect. Then, [ 1 grade 3], choose up to two cards from your opponent's damage zone, put them into his or her drop zone, and deal one damage to your opponent's vanguard for each card put into his or her drop zone.