Maro's Gone Nuts

Mystery Booster Playtest Cards 2019 (CMB1) #81 · Rare · Enchantment

Mana cost: {G}{G}

Double any effect that doubles. (It quadruples.)

Illustrated by Mark Rosewater · Released November 7, 2019

Prices

Nonfoil price since August 29, 2026: down $0.01 USD (1.7%) to $0.57 USD; low $0.56 USD, high $0.58 USD.

Mystery Booster Playtest Cards 2021 #81 (CMB2) · Rare · 2021 · $0.28 USD
Mystery Booster Playtest Cards 2019 #81 (this printing) · Rare · 2019 · $0.57 USD

2019-11-12 · wotc — Double strike isn’t an effect, so it’s not doubled.
2019-11-12 · wotc — An effect “doubles” if it instructs a player to double something, or if it replaces an event with “double that much,” “twice as many,” or similar.
2019-11-12 · wotc — An effect that increases something by a specific amount (such as the first ability of Jaya, Venerated Firemage) isn’t doubling, even if the result is double the normal result.
2019-11-12 · wotc — If two Maro’s Gone Nuts are on the battlefield, effects that double instead octuple. If three are on the battlefield, effects that double instead sexdecuple, and so on.