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.
About Berta in Brawl
Berta, Wise Extrapolator is a Green/Blue legendary creature legal as a commander in MTG Arena Historic Brawl. With Kiln you can forge a complete, rules-legal 100-card deck around Berta in one click, balanced on mana curve and organized by role (ramp, card draw, removal, threats), with every card verified against the real Arena pool so nothing illegal or made-up slips in.
New to the format? Read how to build a Brawl deck.
Frequently asked questions
What color identity is Berta, Wise Extrapolator?
Berta, Wise Extrapolator's color identity is Green/Blue. Every card in its Brawl deck must fall within that identity.
Is Berta, Wise Extrapolator legal as a Brawl commander?
Yes, Berta, Wise Extrapolator is a legendary creature legal to command in MTG Arena Historic Brawl.
How many cards are in a Berta Brawl deck?
Exactly 100: Berta, Wise Extrapolator as the commander plus 99 different singleton cards within its color identity.