Haste (This creature can attack, and as soon as it comes under your control.) If a spell you control would deal damage to an opponent, prevent that damage. Create a 3/1 red Elemental Shaman creature token with haste (This creature can attack, and as soon as it comes under your control.) for each 1 damage prevented this way. When Hostility is put into a graveyard from anywhere, shuffle it into its owner's library.