At the beginning of each upkeep, put a strife counter on Crescendo of War.
Attacking creatures get +1/+0 for each strife counter on Crescendo of War.
Blocking creatures you control get +1/+0 for each strife counter on Crescendo of War.
Near Mint - $1.50
Near Mint Non-English - $1.50
Lightly Played - $1.40
Lightly Played Non-English - $1.40
Played - $1.10
Played Non-English - $1.10
Heavily Played - $0.90
Heavily Played Non-English - $0.90
Damaged - $0.80
Damaged Non-English - $0.80