Pyric Bulwark

[Tennotsukai]

...how would it make Harden Shell useless? It'll already still be superior in situations where you need a more extended damage reduction (pyric won't last longer than 30 secs max, there's absolutely no way) and will always be useful for cannonball (if you use that anymore, I guess).

Something like a better barrier tusk. a stoneskin/invincible effect would be nice.