Puffball

A druid who casts puffball on a normal mushroom, truffle, or toadstool (up to 6 inches in diameter) transforms the fungus into a magical puffball, which can be dropped or thrown. The DM decides what type of roll, if any, is required to hit the target, and misses use the grenade-like missile table in the DMG to determine the point of impact.

The puffball bursts upon landing, releasing a cloud of spores 10 feet in diameter. Those caught in the spore cloud must make a successful saving throw vs. poison or suffer an attack of coughing and choking. They can make no attacks and lose all Dexterity bonuses to Armor Class and saving throws. The cloud dissipates in 1d3+1 rounds; residual effects still afflict creatures' one round after they escape the cloud or it fades.

The spell's effects do not affect undead or similar nonbreathing creatures. If the missile is not thrown (or dropped) by the time its duration expires, the enchantment is lost.

The caster sprinkles the material component, a pinch of ground puffball, over the fungus to be enchanted.