Definite support to the already awesome
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synchro. I like this card, it works well in stall decks since it heals you, and with Butterfly Effect can become a potential rusher as well.
One thing though : I find the card extremely similar to Graboid/Shrieker in terms of both the evolution combo and threat level, which is made slightly more dangerous by allowing a 4
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card to become TU for this card. I can't say it's OP or UP, but it's just something I want to make a note of ATM.