Berta, Wise Extrapolator [SOS - 175]

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.

Rarity: Rare

#: 175

Card Type: Legendary, Creature, Legendary Creature — Frog Druid

Card Color: G, U

Casting Cost: {2}{G}{U}