Wurms are enormous serpentine creatures associated most strongly with green mana, high power and toughness, and trample. Wurm decks generally rely on ramp or cost reduction to deploy creatures that can simply overpower conventional defenses.
Garruk's Packleader can draw cards from suitably large creatures, while Grothama, All-Devouring invites a particularly strange form of combat. Wurmcalling provides a scalable way to produce Wurm tokens repeatedly, and Roar of the Wurm provides a lower-cost 6/6 Wurm from the graveyard via its flashback cost.
