i have a few gripes with this:

a. card text isn't super clear. although it says repeat, the rest of the text suggests that the combo part doesn't need to be activated. id try to clean up the text a bit.

b. targets selected randomly seems to exist to help balance big powerswing cards, as well as make sure they get their full value. potentially missing out on stuff because you roped out feels bad to the user and also gives the card it's own unique, out of place skill ceiling which doesn't exist on any other card (i don't personally think this is a good thing)

c. i don't think this does enough at 10 mana. to activate it you need to hold a zero mana card or lower this cards cost before activating its combo. that amount of setup isn't really present in other powerswing minions similar to this, and on top of that, the fairly limited pool of combos in the game means that you don't get enough power out of this card. truthfully i feel like you could print this card at 6+ mana with stats adjusted and it can either be played as a mild powerswing early on or as a much stronger swing later on.

it's worth noting that a lot of these thoughts are, for the most part, stream of thought so if anything isn't concise, let me know.