Joel, the magic-mashroom

+1: You gain one life for each Saproling and Fungus creature you control.
-1: Joel, the magic-mashroom deals damage to target creature or plainswalker equal to the number of Saproling and Fungus creature you control
-X: Create X 1/1 green Fungus token with: "When this creature dies, create two 1/1 green Saproling creature tokens."