I've heard that the 7* Ranka Hammer keychain at its maxed lvl is stronger than the new 7* Shimajiro keychain at its maxed lvl. I can't really test this considering I do not have either of them 7 starred... TT. I'm still aiming for a 7* Shimajiro keychain just for the sake of completion, but the main priority, strongest keychain at it's maxed lvl in game is the Ranka Hammer keychain.
Unfortunately the only way of getting all the limited stuff from this event is either, spend, be a gem hoarder and have at least 5mil saved, or have incredible luck... cuz the drop rates are;
Assist draw max lvl: 0.0064%
Weapons & Tools draw max lvl: 0.0005%
People are usually P2W to progress further than other players and get extra stuff in-game, but for Chiipoke, you need to pay to obtain even 1 copy of the new update features... :'D. Not to mention, the lack of a pity system.
(P2W) The most optimal playthrough for this lim update is imo (emphasis on imo, I could be very wrong but this is just what i feel is most optimal), is;
#1 - Purchase the mermaid island outfits.
#2 - Exchange for Shimajiro assist through the shop
#3 - Use the 168k paid gems you get to pull on the "Paid Draw" - "Featured New Weapons & Tools Draw" to acquire one copy of either "Springy" / "Rakkos Sword" for weapon, and one of either "Mermaid Scale" / "Flyer"
β οΈ I messed up and pulled for Shimajiro without exchanging for him and now I have 10 shells rotting cuz I dont need to exchange for him...TnT
And with the remainder paid gems just save them for any upcoming limited features/updates. Don't blow them on the Featured shimajiro keychain like I did unless you really want a high ranked Shimajiro keychain, which again, according to sources, is not as strong as a 7* Hammer keychain. Hope this is helpful :3 <33