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 - $1.75
Near Mint Non-English - $1.75
Lightly Played - $1.75
Lightly Played Non-English - $1.75
Moderately Played - $1.50
Moderately Played Non-English - $1.50
Heavily Played - $1.00
Heavily Played Non-English - $1.00
Damaged - $1.00
Damaged Non-English - $1.00