For Peter Pettigrew's influence check, does the value mean the card's acquisition cost, and does a starting card trigger it?

Question

Accepted Answer

Yes, value means the Influence needed to acquire the card. Starting cards have no cost and do nothing; any card acquired with Influence triggers Pettigrew, even one costing 1.

Harry Potter: Hogwarts Battle

For Peter Pettigrew's influence check, does the value mean the card's acquisition cost, and does a starting card trigger it?