Ever complete dismantle a guy that's been cheating for years?
>playing some red white cantrip deck that gets spells back to his hand
>runs sunforger
>'it came from exile, it doesn't have summoning sickness'
>'it has a shield counter, so -X toughness means it comes back'
>'I can respond to cryptic command when it targets'
>'tapped my mana wrong'
>'let me take back these 3 spells'
I can never tell if people feign ignorance to cheat