User blog comment:Xennar/Ancient Sentinel fast elimination method/@comment-25584573-20150123194741/@comment-25584573-20150209003137

The last time i only used 3 leg sandworms (i'm at lvl 70, sandworms rank 7). I don't know the exact time, could have been 6-8 minutes to win - no losses, no healing time or cost.

When the arms are gone the damage is max 4 per turn, even when the sandworms are low on hp this battle is won.

If the as should be lucky it could defeat this formation.

And this doesn't work on level 50 every time - on this level the player needs some luck (or a unit which might be killed to freeze the ranged arm).