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Cards/Secrets of Strixhaven Promos/Berta, Wise Extrapolator

Berta, Wise Extrapolator

{2}{G}{U}

Legendary Creature — Frog Druid

Secrets of Strixhaven Promos·psos #175p·Rare·2026·Art by Tuan Duong Chu
StandardLegal
ModernLegal
CommanderLegal
LegacyLegal
PioneerLegal
VintageLegal

Oracle Text

(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.

P / T

1 / 4

Card Knowledge

Printing History

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Value over time

Related Cards

Legalities

StandardLegal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal

Rulings6

3/20/2026·wotc

Berta's second ability isn't a mana ability. It uses the stack and can be responded to.

3/20/2026·wotc

When comparing the mana spent to the creature's stats as the increment ability resolves, it's possible that the stat that is less than the mana spent changes from power to toughness or vice versa. For example, say you control a 1/3 creature with increment and you pay two mana to cast a spell. Since the amount of mana you spent is greater than the creature's power, increment will trigger. While the increment ability is on the stack, an effect gives the creature with increment +2/-2, making it a 3/1. When the increment ability resolves, the creature will still get a +1/+1 counter since the amount of mana you spent is greater than that creature's toughness.

3/20/2026·wotc

The increment ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.

Print Details

Set
Secrets of Strixhaven Promos (PSOS)
Number
#175p
Rarity
Rare
Artist
Tuan Duong Chu
Frame
2015
Border
Black
Language
EN
Finishes
Nonfoil, Foil

Value

USD
$0.54
USD Foil
$1.29
EUR
€0.15
EUR Foil
€0.33

Indicative figures.