Of course there's the issue this only protects a creature and while people are less likely to use arbitrary-number combos on creature removal. I'm so used to the potential ridiculousness of the format that protection pieces probably need to cover as many angles as they can. It's not even a matter of how difficult it is to get the required devotion, it's that chances are no amount of devotion will be able to deal with the arbitrary huge amount of damage that arises from some combo. Of course, it's not a staple of any kind still (it diminishes the more creatures you have since that encourages boardwipes regardless and is outright double-edged if you need to target your own creatures), but in the decks that can utilize it with the absolute minimal drawbacks (as I have) I daresay it's a 10/10 in those decks. Combined with the cheap casting cost (something most mass-shroud/hexproof enablers don't really have) and that it's the only card to grant all creatures the 'Glasskite' ability (the other Glasskites themselves are unremarkable creatures), making it the unique choice and a reminder why Kamigawa is so loved by the format. In some ways Kira is even more grating than just outright granting shroud/hexproof since the active thought of having to spend double the effort/resources on spot removal sometimes annoys opponents way more than just resigning yourself to the fate not being able to target them. Bonus points if said pieces involve Gods since that would require an extra dedication to exile-boardwipe to achieve (either that or they had to use an additional exile spot removal after using normal boardwipe to get rid of Kira, which is still a win for Kira). It's fantastic protection in a deck with few but vital creatures because even the boardwipe that gets through (the counterspells that are freed from dealing from spot removal thanks to Kira) would usually hit you less in terms of actual numbers than other opponents, so the scenarios you actually feel bad are minimal (and even in those cases which you can't blame Kira either for trying its best).

I'm glad I picked up a foil one many years ago before the eventual price creep on it. PDH - Drake - Graverobber - Izzet GM - Tallowisp - Symbiote Brawl - Feather - Ugin - Jace - Scarab - Angrath - Vraska - Kumena Oathbreaker - Wrenn&6 Thrasios+Bruse - Pang - Sasaya - Wydwen - Feather - Rona - Toshiro - Sylvia+Khorvath - Geth - QMarchesa - Firesong - Athreos - Arixmethes - Isperia - Etali - Silas+Sidar - Saskia - Virtus+Gorm - Kynaios - Naban - Aryel - Mizzix - Kazuul - Tymna+Kraum - Sidar+Tymna - Ayli - Gwendlyn - Phelddagrif 4 - Liliana - Kaervek - Phelddagrif 3 - Mairsil - Scarab - Child - Phenax - Shirei - Thada - Depala - Circu - Kytheon - GrenzoHR - Phelddagrif - Reyhan+Kraum - Toshiro - Varolz - Nin - Ojutai - Tasigur - Zedruu - Uril - Edric - Wort - Zurgo - Nahiri - Grenzo - Kozilek - Yisan - Ink-Treader - Yisan - Brago - Sidisi - Toshiro - Alexi - Sygg - Brimaz - Sek'Kuar - Marchesa - Vish Kal - Iroas - Phelddagrif - Ephara - Derevi - Glissa - Wanderer - Saffi - Melek - Xiahou Dun - Lazav - Lin Sivvi - Zirilan - Glissa

Mtg maelstrom nexus