Lethal Vapors + Mycosynth Lattice + Stony Silence

Lethal Vapors

Mycosynth Lattice

Stony Silence

How it works

1. Whenever a creature enters the battlefield, Lethal Vapors triggers, destroying that creature.
2. Because Stony Silence prevents Lethal Vapors's activated ability from being activated, it cannot be destroyed due to its ability.

This clever lock relies on Mycosynth Lattice to turn all permanents—including enchantments like Lethal Vapors—into artifacts, bringing them under the blanket prohibition of Stony Silence. Because Stony Silence shuts down the activated abilities of all artifacts, players are legally barred from paying zero to destroy Lethal Vapors and skip their turns, effectively neutralizing the safety valve on its self-destruct clause. With this restriction in place, Lethal Vapors remains safely on the battlefield to automatically destroy every single creature that dares to enter, creating a total creature lockdown that opponents cannot break from within the confines of the rules.