Other Cats you control get +1/+1 and have protection from Dogs.
Whenever one or more Cats you control deal combat damage to a player, destroy up to one target artifact or enchantment that player controls.
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a Cat you control may become lethal if Feline Sovereign leaves the battlefield during that turn.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.