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 - $2.00
Near Mint Non-English - $2.00
Lightly Played - $1.80
Lightly Played Non-English - $1.80
Played - $1.40
Played Non-English - $1.40
Heavily Played - $1.20
Heavily Played Non-English - $1.20
Damaged - $1.00
Damaged Non-English - $1.00