Rottenmouth Viper ETB doesn't trigger if opponent destroys it
For some reason, if I play Rottenmouth Viper, and the creature successfully enters the battlefield, it should gain a blight counter. Then, in my experience, if an opponent casts a spell that destroys Rottenmouth Viper, the ability to force an opponent to either sac a creature, discard a card, or lose 4 life does not trigger.
Shouldn't the ability trigger at least once since it successfully entered the battlefield?
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Rezzahan#77802
commented
It entered the battlefield, but without any blight counters. Adding a blight counter is part of the ETB trigger. If the Viper is removed before it gains that counter, the trigger cannot do anything as the Viper's last known information includes it not having any blight counters. And you can't add a blight counter to the no longer existing Viper.