Adarkar Windform
{4}{U}
Snow Creature -- Illusion
3/3
Flying
{1}{S}: Target creature loses flying until end of turn. ({S} can be paid with one mana from a snow source.)
Canopy Claws
{G}
Instant
Target creature loses flying until end of turn.
Flashback {G} (You may cast ~this~ from your graveyard for its flashback cost. Then exile it.)
Downdraft
{2}{G}
Enchantment
{G}: Target creature loses flying until end of turn.
Sacrifice ~this~: It deals 2 damage to each creature with flying.
Radjan Spirit
{3}{G}
Creature -- Spirit
3/2
{T}: Target creature loses flying until end of turn.