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{2}{R]: Destroy target creature you control, and Big Cannon Beast deals 7 damage to target creature.
Transform {U}{R}{G}: ({U}{R}{G}, shuffle Big Cannon Beast into its owner's library: Reveal cards from the top of your deck until you reveal 3 creatures whose converted mana cost is equal to or less than this card's converted mana cost plus 1. Put one of the 3 revealed creatures onto the battlefield, and put the rest at the bottom of your deck in any order.)
If you control two or more multicolored creatures, this creature's transform ability costs {U}{R}{G} less to use.