If multiple cards are put into the library this way (such as when this spell targets a melded permanent), that permanent's owner puts all the cards second from the top or all the cards on the bottom
When I read Legion's Initiative the first time, it seemed like it would come back into play with the creatures you exiled, but that is not the case
There are all sorts of wacky combos you could do with this, so youre only really limited by your imagination
Garruk's Uprising and Elemental Uprising will both reward you for playing creatures , which you should be able to do almost every turn.They do require that the creatures have power over three, but you should be able to achieve that by your second Slime Against Humanity
Storm, Force of Nature Storm is a broken mechanic, though limited to the handful of storm cards that actually exist in the game