Gustav, Gorger of Claws

+1: Create a food token with: Eat this token, produce one mana of any color; mana produced this way can only be used to cast Instants & Sorceries
-2: Sacrifice two food tokens and create four 2/2 Crab Wizard Creature tokens with with haste.
-6: For every token under your control, copy the next instant or sorcery spell cast for that number of tokens.