As a Christian, how heretical or offensive would it be if you openly professed disbelief in Goblins?

What's a Goblin? A short-statured greenish quasi-human creature? It's perfectly acceptable to 'disbelieve' in Goblins, but the odds of the existence of Goblins somewhere in the multiverse are exponentially higher than that of an ever-existent complex God creature with special powers of magical creation. I mean, God is statistically impossible as per 1:1x10^50, Goblins aren't.