Battle challenges on sprinterlands

hello everyone, I hope you are doing well and healthy. Today I'm available with my new battle challenges.But now I'm not diserve to challenge because not sufficient knowledge on sprinterlands. please give me more time then I will prove myself.And you can watch in this video that, how to my Play.So can suggest me how can improve my game. I think this ise my third video on sprinterlands and I'm learning that how to play with Card.
And I'm sharing my battle link
https://m.splinterlands.io/#/battle/game/process/sl_413ed4b3db59ecba239035abad686c38
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In this battle I used 18 mana and my card.
(1)CHAOS AGENT

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I don't know how to work this card but I taken from mana.
(2)REGAL PERYTON

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I think this card use for life because this card six life.
(3) MYCELIC MORPHOID

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This Card used and i think this card one time attack on enemy and one life loss.

thank you so much
stay safe and healthy