first impression is its pretty fun.
as for the
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golem, having guard being one of the abilities (for 4x earth or 5x earth) seems a little odd given that it is given to the "higher ranking" shard combinations, which have higher attack, and using the ability essentially nixes that down to 0, while a low cost base creature would fill those shoes just as well.
and adrenaline on the higher atk
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golems seems incredibly irrelevant
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gravity ones (1-4x) are a bit on the less fun side as well.