Etched Slith Bug
Etched Slith ability to remove a counter instead destroys permanent instead of removing counter.
This happened in 2 consecutive games where after dealing damage to opponent the trigger to remove a counter from target opponent/permanent goes on the stack. You may target any permanent and if there is no counter nothing happens (normal). However, if there is a +1/+1 counter at least the target creature is destroyed instead of removing the counter. This happened when I targeted an opponent creature as well as when I targeted my own creature.
![](https://secure.gravatar.com/avatar/b645de961c64f2810b0f9324eda35088?size=40&default=https%3A%2F%2Fassets.uvcdn.com%2Fpkg%2Fadmin%2Ficons%2Fuser_70-6bcf9e08938533adb9bac95c3e487cb2a6d4a32f890ca6fdc82e3072e0ea0368.png)
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Rezzahan#77802 commented
Did those creatures receive damage already during the turn? If so, the removal of a +1/+1 counter can lower the toughness to where that damage is lethal, and thus the creature is destroyed. Damage stays marked on creatures until the cleanup step or until an effect (regeneration, totem armor) removes it.