caitlin pokemon card PSA 10 Cynthia & Full Art Put a Supporter card from your discard pile into your hand Caitlin 189/198 Chilling Reign NM

This means it's not possible to cheat creatures into play out of nowhere (which madness can do), but it also means you're granted more flexibility, because you can cast a spell for its mayhem cost at any point during the turn in which it was discarded (rather than having to choose immediately as per madness rules)

Giving Lands in your graveyard Dredge is absurd

All of them originally released in January

Timing rules still apply.) Mayhem represents an alternative cost that can be paid to cast a spell from your graveyard if you discarded the card with mayhem that turn

Adventurer's Inn was used to showcase the card type, basically being a Radiant Fountain with an extra subtype