Berta, Wise Extrapolator
Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.) Whenever one or more +1/+1 counters are put on Berta, add one mana of any color. X, T: Create a 0/0 green and blue Fractal creature token and put X +1/+1 counters on it.
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