The wraithwing gets stuck in the serpent trap again, so you'll again need a wraithwing to lure it towards you. The problem is the roach at (18,6), which forces a certain sequence of orbs to be struck.
×Need to hit northeast orbs first, then lower northwest, then south, then upper northwest. This all means that only one thing can go through the gates of (22,19)/(24,19), making the solution used in variation 5 impossible.
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×There is another way to get a wraithwing onto (21,21).
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×Look at the force arrows carefully.