At the very least, Blight Ranger needs to be able to convert incoming damage to super energy at a good enough rate that it can block indefinitely, as long as enough damage is coming in. It should be like Doomfang Pauldrons for Arc Staff. As for Raiju's, its first problem is that the person that redesigned it and the person who wrote its new description were not on the same page. It doesn't seem to actually give you any super energy for defeating debuffed targets, but what it does do (which isn't specified in the description at all) is refund you super energy for kills scored with the new lightning storm effect. It seems to be kind of like a worse version of Skull of Dire Ahamkara, or Shards of Galinor. If it actually gave super energy for killing debuffed targets, like it says, it could almost be a decent exotic, except for the fact that the lightning storm happens around you, not around your staff. In other words, Raiju's takes a safe ranged super and forces you to get up close into one-shotting range in order to use it effectively. If they changed the lightning storm to come down around where the staff lands, instead of around the player, and fixed the issue with the exotic not giving super energy when killing debuffed targets, Raiju's could actually become a pretty solid exotic.