Royal Guards Claymore buff is a bit of a dud unless you’re using it to kill lynels. In short, the buff only activates just before the sword perishes due to damage: the last one (perhaps a few hits) get the damage buff. The reason people use this on lynels is because when you are riding them, you can hit them with your sword but it does not degrade the weapon; hence, the ‘how to farm lynels’ vids all show the method of fused RG Claymore, with damage warning in place, being used to whack the hell out of a stunned lynel over and over. I think that may be what you are asking about? And for regular use, I think the buff is pretty poor but it does go along with the description in the game of the RGC - something along the lines of: ‘massive destructive power before it breaks’ I only know the above because my son was trying to work out how to upgrade his armour and ended up watching YouTube vids. Personally, I am really enjoying TOTK. Not sure how far into it I am but I have done the four regional anomalies, a bunch of side quests and a lot of shrines as well as opening up chunks of the depths. A superb game and easily a match for BOTW; although that will always have the edge for me because it was the first and felt new and special. The assistance of the sages is an interesting element. Personally I find them less effective and more of a distraction when you have multiple summoned but I do use their special skills when exploring and relevant, specifically the boulder attack when wanting to crack rocks in caves (saves building hammers!) and Tulin’s gust when gliding.