Only the most skillful riders brave the Breakneck Ride through Kessig.

Breakneck Rider

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

Neck Breaker

Attacking creatures you control get +1/+0 and have trample.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Neck Breaker.

Breakneck Rider // Neck Breaker

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

 Attacking creatures you control get +1/+0 and have trample.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Neck Breaker.

Breakneck Rider // Neck Breaker

Creature — Human Scout Werewolf // Creature — Werewolf