Interesting cycle. This one is probably fairly strong, since it's repeatable; late game this could mean gaining 6+ life a turn.

BTW, since you're using a skeleton, you may want to edit your cardset options to turn on card codes; that'll let you use codes in a few more places, edit the code on a card after you create it, and so on.

As in my comment on Memory Pool, the cost needs to include tapping to prevent abuse.