Hello!

Just like what other users said above, as of now the only way to obtain Secret Scroll Page and Mantra Elixir are from the events of Konoha Outlets (at 42 coupons per pack), Total Recharge Rebate (if you recharged) and from Fukurokumaru's Deal. Thank you.

Hello!

Like what Danzo said above, yes. I do think that the Initiative Stat carries through Arena. And about the coupons = power question, I haven't tried spending on this event to the fullest but I did try it on my other account. 5k coupons worth of Secret Scroll Pack from Konoha Outlets made my Ini+LR at Level 5 and Ini+TP at Level 3, total power I got is around 2.7k. Spending coupons for the new feature? No, I won't for now. In my opinion, the cost is high and the gain is not much, Training Potion is still the best (up to Level 8s to 9s, 10s if you can spend more).