How do you defeat the Iblis trigger while playing silver on sonic hedgehog plastion 3?

It seems you're referring to a fictional scenario involving a game called "Sonic Hedgehog Plastion 3" and a character called "Iblis Trigger." This scenario is not based on any real-life game or character.

Sonic the Hedgehog games do not have a character called "Iblis Trigger" or a "Plastion 3" game. You might be thinking of a fan-made game or concept.

If you can provide more details about the specific game or concept you're referring to, I might be able to help you with strategies for defeating the Iblis Trigger.