Alright, I'll operate under the assumption that Krix can lift 10 tonnes.

About the wolf summon, if it's not going to be a one-time strategic thing, I feel like there should be something more involved in their summoning than "They appear!", since that basically just means that your opponent ends up fighting four champions (even if three are less powerful) at a time instead of one, the weaker three of which can be instantly healed and return to battle after death every X amount of posts.

To me, an attack that increases the number of opponents should be a one-time option whose use needs to be decided tactically, rather than spammed at every opportunity (because if you CAN do it every X posts, why wouldn't you?). An exception to this would obviously be a specialized summoner, who's weaker in personal power than their opponents but makes up for it by summoning creatures stronger than themselves. Summoning wolves, however, makes a lot of sense for your character so I would hate to see the ability removed altogether.