Warden spawn and exstra features

The warden is very interesting and a very dangerous mob in the underworld , can only be summoned by the shierker, only problem is there is a lot of shierker in almost every deep dark cave (or a patch of deep dark) that can summon the warden, and sometimes more that one wardens are summon and in countering the warden isn't uncommon.Making it way to difficult for the player because they have to deal with them frequently. Thats where i think that the warden should be more rare, make it so that the warden or the shrieker is only located in the ancient city and only one warden are summoned in a lets say 100 block radius , this is just to make the in countering of the warden rare and more scary.

If the warden is indeed rare, it should also be made more challenging since there is a few ways to chees the warden and to escape it easily. Three features i think so be added to the warden.

1-when the warden is now aware of the player, it will blowout or disable any light source nearby(in a radius) to immerse the player in complete darkness.

2-the warden should break block or go through it but it must have a cooldown,since player can easily build a wall to escape or chees the warden.

3-(optional) the warden should shoot projectiles(cooldown) for ONLY if the player is constantly shooting projectiles at the warden and if the player is at a hard to reach place for the warden, the warden should only  knock off or stun the player.