Looking for an adventurous group of 3 to test skill combos

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Just as the title mentions, I am looking for an adventurous group of 3 people, along with me, to test out various things that could react in a skill combo.
Even if we randomly achieve them it is useful noting down the formula of when said combos took place.
This is all I have due to the fact I have recently started taking notes, but it might be worthy of checking out to see how it activates.
Earlier today I was playing a match with the following classes using the following weapons, and the combo looked like the steel dagger cross.
Steel combo?: Rogue Gunner, Warrior Lancer, Rogue Archer(me)
I don't note doing anything special in there, but that is the arrangement of the party, and a skill combo must have been achieved of the sort doing that.
None the less, as the title said, if you're looking into finding out about the elusive skill combos, I am recruiting for a testing party.

 

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A few to note:
-Pretty much any field that stays over time can be shot through by other teammates for a combo (fire mage wall, ice mage wall, rogue archer's caltrop field, etc).

-I noticed when an ice mage crits an enemy and creates an icecube, you can sling it at enemies with the defender warrior's shield push. It also leaves an ice path behind it.

-shield special also fires a wave of fire/ice when used near a mage's field.

These are all the ones I found on accident, haven't really tried finding any more but I'd try mixing fields with other warrior specials as well.

 

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Did the combo icons pop above the characters heads? Those are nice things to note, but yeah, none the less I want to start testing skill combos as they look to be a good part of the hidden game.