Golden Eagle, Phantom Beast/Rulings

From http://www.takaratomy.co.jp/products/wixoss/card/card_list.php?card=card_detail&card_no=WX18-078:

Q: I put this SIGNI into play when my LRIG is Hanayo Two Remodeled, Roaring Flame. Can I use its ability? A: The SIGNI is put into play during the main phase.

Q: I have Hanayo Two Remodeled, Roaring Flame and Inuwashi, Phantom Beast on play. My opponent's turn ends and I enter my main phase. Can I use its ability? A: No, you cannot. This SIGNI's ability requires its power to increase from below 5000 to above 5000 in order to activate. As its power was already above 5000 at the start of your main phase, its ability would not trigger.