It is rigged in the sense that its SUPPOSED to have a terrible success rate otherwise the people who put in the most money would just have perfect characters.

What makes me upset is when you FINALLY get some of the heroes you wanted (not the hero themselves but their cards for sanctify) and then you get stupid ****.

Defense on my shayd
Magic attack on my valla
Magic attack on my alexa
Failed at 90% on my alexa
Failed at 80% on my shayd

Every time you fail or get a ****ty stat its like taking a ****ing $10 bill and lighting it on fire...considering at Knigh Level 50 it takes 2 million credits to get the hero card.