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I actually do believe it is "that strong". It lacks (a lot of) counterplay, and the tier is not stable enough or (yet) to be able to afford the negative effect Kartana has on the tier, as we already have less counterplay for many viable Pokemon.
Sadly, my favorite alien in ben 10 has already had a submission for which is so good I can't make anything better (G-Luke's). I'd only suggest to add a +1 priority status move that makes the user immune to physical attacks for the duration of the turn.
I'm sorry but I retire from taking part of this pet mod (including any other pet mod, I never had any intention to do a submission of any other pet mod anyways) because I don't have as much willpower to put the effort needed to make a submission, mostly because I happen to be tired every day...
Four Arms: Origin0, Yoavgreninja, G-Luke
Diamondhead: G-Luke, Origin0, and as for third, I don't like any of the other submissions for Diamond Head so please pick randomly for my third Diamond Head vote.
Ripjaws: charizard8888, Origin0, G-Luke
I'd submit more but I don't feel like it, at least not for the classic ben10 season (the one that came before Alien Force). My main focus would be Alien Force since it's very nostalgic for me and I'd contribute a wholeee lot during that time
P.S.: btw the reason I submitted Four Arms in the...
I mean, Diamond Storm is an ability that is only about manipulating CARBINK PINK kind of diamonds. In Pokemon, Legendary signature moves aren't obtained by other Pokemon. The fact that Accelgor gets Water Shuriken has nothing to do with distributing legendary signature moves, because signature...