Most were collected previous to him joining the forum and posting. 
I think he got about 10 at Nats, including the ones you gave him.
this is amazing he has 2 posts and 60+ leviathans xD
do you have a sword of the lord for every one of those??
I should have thought of doing that years back when he started!
The original plan was to get enough to sleeve a T1 deck of 56 cards with clear sleeves so you could see the Leviathans on the backs. Unfortunately, the way the new cards are cut makes this idea obsolete. But they're too awesome for him to stop collecting.
