You know what this reminds me of? The Monkey's Paw! It grants wishes but they don't turn out how you want them to. Anyhow, back to business. Don't wanna get shoved back in the lamp.
Granted. But you find out it's a black hole that will destroy the universe.
I wish for a saber-toothed behemoth that acts as my guardian but can't harm humans including me and can't destroy my home, the city, state, nation, continent, world, universe, or alternate universe...or my prized posessions. Try and mess that up, you monkey paw slingers! I've got all my bases covered!