This is the new trample mechanic they recently introduced.. When it tramples it can keep repeating it when it has the chance to do so.
And oh my... when it hits it hits real hard.
Here's a replay of how it can go about:
https://splinterlands.com?p=battle&id=a549f2aab23e6bd247f41d079a6809567400a681&ref=gregan
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