Debating if this was a good buy

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So after a couple days siting thinking on it I decided to buy mylor crowling.
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after a few battles I realized he is good for only certain instances, otherwise my team gets smoked like a cheap cigar. As is good summoner mainly against water or death teams. Share your thoughts and strats. Struggling to grasp any good ones atm.

Debating if this was a good buy | Ecency