You may look at the top card of your library any time. You may play snow lands and cast snow spells from the top of your library. Whenever another snow permanent enters the battlefield under your control, you may pay {G}, {W}, or {U}. If you do, put a +1/+1 counter on Isu the Abominable.
Near Mint - $1.70
Lightly Played - $1.60
Played - $1.20
Heavily Played - $1.10
Damaged - $0.90
Near Mint Non-English - $1.70
Lightly Played Non-English - $1.60
Played Non-English - $1.20
Heavily Played Non-English - $1.10
Damaged Non-English - $0.90