Trip Vine

Transmutation
Level:Druid 2, Ranger 2
Components:V, S, DF
Casting Time:1 Standard Action
Range:Medium(100ft.+10ft./level)
Area:One 10ft.Square/level(S)
Duration:One Hour/level
Saving Throw:Reflex negates; See text
Spell Resistance:No

Trip vine causes plants within the area to grow together to form a tangle.
Any creature entering an affected square must succeed on a reflex save or fall prone.
Any creature charging into an affected square takes a -2 on it's saving throw.
If this spell is cast into an area of undergrowth(See DMG pg 87)
saves against this spell take a -2 penalty.