by david707
Some suggestions:Fungus Cards:
Fungal Behemoth http://magiccards.info/pc/en/128.html
Mycoloth http://magiccards.info/pc2/en/68.html
Psychotrope Thallid http://magiccards.info/pc/en/137.html
Savage Thallid http://magiccards.info/ts/en/213.html
Utopia Mycon http://magiccards.info/fut/en/140.html
Ramp:
Nature's Lore http://magiccards.info/gvl/en/17.html
Skyshroud Claim http://magiccards.info/ne/en/117.html
Other:
Craterhoof Behemoth http://magiccards.info/avr/en/172.html (Very good at winning)
Asceticism http://magiccards.info/som/en/110.html (protect your creatures)
In fact if I were to build a fungus deck I'd be tempted to go for 4 of each of those cards and 24 Forests.