Summons selected zero cost card in hand (can't summon self)
Wow, this is crazy! I like it.
I wonder if it'll end up being overpowered though. Cloning Return to the Beginning, Overlord, Order of the White Lotus, Invocation, Mediator, etc. with a common? Quite strong.
In any case, it's much more interesting than the previous version, so it's a good change in my book :D