At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X is the number of Islands target opponent controls.
NM-Mint - $6.30
Lightly Played - $5.70
Moderately Played - $5.00
Heavily Played - $4.40
Damaged - $3.20
NM-Mint Non English - $6.30
Lightly Played Non English - $5.70
Moderately Played Non English - $5.00
Heavily Played Non English - $4.40
Damaged Non English - $3.20