Wolven Beacon

At the beginning of your upkeep, choose
Predator or Prey.
•Predator - Wolf creatures you control get +1/-1
and gain Trample until end of turn.
•Prey - Wolf creatures you control get -1/+1 and
cost {1} less to cast until end of turn.
"The wolf must always know when it is best to hold
back, and when best to go for the kill."
- Ginevra of the Red Hood