Level 6 nightmare with the skill phase is very handy especially when added with speed buffs. A lot of misses are expected from the opposing team.
You can quickly watch this battle and see how OP this card is, this card is also very good when there is a rage ruleset.
https://splinterlands.com?p=battle&id=sl_43a0bdf1d616a6e10e7771dbd9a92d0b&ref=yamsie
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From @ogrelord