(December 12, 2015 at 2:28 pm)IATIA Wrote:
- It is possible that a Leprechaun exists.
- If it is possible that a Leprechaun exists, then a Leprechaun exists is some possible world.
- If a Leprechaun exists in some possible world, then it exists in every possible world.
- If a Leprechaun exists in every possible world, then it exists in the actual world.
- If a Leprechaun exists in the actual world, then a Leprechaun exists.
- Therefore, a Leprechaun exists.
Leprechauns (or any other thing commonly used to parody this argument) are not commonly thought to have the same characteristics that are attributed by definition to a supreme being. These characteristics include omniscience, omnipotence, omnipresence and so forth. And these are necessary for a being to be "maximally great".
If you do wish to claim that a leprechaun (or

Yahweh, Allah, Baha'u'llah, Zeus, Osiris...the name changes, but the being behind the name is the same. Provided that all the "omni" characteristics are present in that being.