Gatstaf Arsonists // Gatstaf Ravagers (SOI-158) - Shadows over Innistrad: (Double Faced Transform)

At the beginning of each upkeep, if no spells were cast last turn, transform Gatstaf Arsonists.

Menace (This creature can't be blocked except by two or more creatures.)
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Gatstaf Ravagers.