Johnthomis Deckling

Does it still send all creatures back to their owners hands then? Or would the intrepid hero interrupt and kill ot before the activation sending all non horrors back to their owners hands?

When thing in the ice flips lets say i have an intrepid hero on the field. The final instant or sorcery is cast and the flip happens. Obviously I can't tap the intrepid hero while thing in the ice is still thing in the ice because ot does not have a power of 4. But can I tap it and destroy the awoken hotter before it is returned to my hand?

P.s. sorry for not linking the card names. In not sure how to do itm.

If I revealed and put into play a druids (or various) with a genesis wave would it activate the draw mechanism of the holy leaf archdruid?