Hooray for thread necromancy!
Why did you abandon this idea for so long?
Saw this idea and was pretty impressed by the card, the only thing that sucks is that, as of now, there's already another 'Siren' card in the Forge, so this idea might get shut out.
Perhaps if you changed the name, it could have a chance to get into the next level...
Also Essence, you should do the following as well in terms of fixing the discrepancies:
-Change 'Each' to 'Every' in your table descriptions
-Remove the double spacing between 'their' and 'turn' for the non-upgraded card ability table description
-Change 'the' to 'your' in your table descriptions
P.S. - awesome art.