Zatth
usefulness: I mean in tight situations, summoning a large rahi can help, but by my understanding it is hard to control which rahi to summon, so its pretty annoying
How dangerous: Extremely, what if it summons a rahi that would kill the toa?
Rahi Control:
Usefulness: well you could control armies upon armies of rahi, so I would say its pretty useful
How dangerous: sorta that inbetween, if you break a connection with a rahi, they could easily attack you, but if you had good control over it, you could just re control it
A whole week of debating? I think it’s pretty clear that the Mask of Rahi control is basically a more effective version of the Zatth, where you can actually control what you summon.