That was a big thing... It wasn't like John could summon an entire ocean. And the thought that crossed his mind about hypnotising the God seemed completely unrealistic. A God of nature, or creation could have perhaps helped there but that was above the sort of spell work he could do. And Johns realm was light and dark magic, elemental magic to an extent. But not really much in the way of nature. Of course, casting the right spells and altering the reality of his confined space could work. Of course... He could make it similar to the Millhouse. It was bigger on the inside. But then again there were the problems with the space outside of that particular house. The seemingly infinite void. He needed to try and think of something else. In the mean time, he could work on the leylines project at least.
"I'm sorry I can't help there, mate" he said, trying to smile. "Not for now anyway. Never been much of a quitter" he said with a big grin and a wink. "Think I might have taken up enough of your time anyways, handsome. I've got some leylines to map"