DGS Games is developing special models for spell effects in their Freeblades game:
From their website:
The first model planned for release is the animal swarm that is cast by the Trilian Treespeaker. The green is shown here.
From the world of Faelon: Treespeakers possess the power to call upon the creatures of the forest as allies. While small and unintimidating, Animal Swarms are deceptively powerful. Even the Animal Swarms brought forth by apprentice Casters can harry, harass and hinder the mightiest knightly warrior. Many an arrogant opponent has been brought low by hordes of supposedly harmless beasts called to aid a Trilian freeband.