Is Lissandra a good champion to master?

I'm a Syndra main and I'm looking for a secondary just in case Syndra is taken or banned (which never happens lol). I've been thinking Lissandra since I always go for non-popular champs, is she a good champion? What if I full-time master her? I haven't seen a Lissandra in a very long time. Is she useful for the team? Does she carry easily? Will it be easy for me to change from Syndra to Lissandra? Thanks!
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