Bralani (Eladrin) and air mephits have gust of wind as a spell like ability.
Nagas, rakshasa, aranea, driders, formian queens, dragons, and couatl all cast spells as a sorcerer.
Nymphs cast spells as a druid.
These monsters all have "typica spells know" but you can customize them if you want to include gust of wind and/or passwall.
Alternatively you can give a monster class levels in druid, socerer, or wizard.