Reckless Waif // Merciless Predator

Reckless Waif

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

"Yes, I'm alone. No, I'm not worried."

Merciless Predator

At the beginning of each upkeep, if a player cast two or more spells last turn, transform this creature.

Before she just wanted to snatch your purse; now she'll take the whole arm.