Berta, Wise Extrapolator
Secrets of Strixhaven Promos (PSOS #175p)
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Berta, Wise Extrapolator
CMC: 4
Type
Legendary Creature — Frog Druid
Rules Text
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.
, 
: Create a 0/0 green and blue Fractal creature token and put X +1/+1 counters on it.
P/T
1/4
Printing
Secrets of Strixhaven Promos (PSOS #175p)
rare
Illustrated by Tuan Duong Chu
legendary