He is based on the peppermint (Mentha × piperita), a hybrid mint which is a cross between watermint and spearmint.
His name might be a reference to Doublemint, a brand of chewing gum which is manufactured by the Wrigley Company. It also alludes to his ability, as he can double his own stats.
His name and ability, as well as his description, could be a reference to the fact that mint is known for its rapid growth, and even overgrowing gardens when left untended.
Statistics
Class: Mega-Grow
Tribe: Leafy Plant
Traits: None
Ability: Start of Turn: Double this Plant's Strength and Health.
Set - Rarity: Premium - Legendary
Card description
He'll grow on you. Just give him time.
Update history
Update 1.4.14
▲ Health change: 1 → 2
Strategies
With
Doubled Mint appears to be a gimmicky plant, doubling his stats every turn. However, he isn't very viable for multiple reasons. His low stats (which on turn 2 is a bad tempo play) mean almost everything that can be played from turn 2 onwards such as Bungee Plumber and Rolling Stone can destroy him before he can make any play.
He is weak to Deadly cards like Smelly Zombie and Barrel of Barrels, rendering his high health useless against them and losing the sun you used to boost Double Mint. He always needs to be played alongside other cards such as Umbrella Leaf, Force Field, and Fertilize, restricting your deck a lot. Finally, in the case you did managed to boost him, bouncing basically also wastes him as it causes you to lose all the resource you put into him.
Against
Doubled Mint's ability might seem like a huge threat but he's actually not much of an issue. His low stats for his cost mean Bungee Plumber, Dog Walker, and Rolling Stone can destroy him before he can boost himself.
He is vulnerable to being bounced, messing your opponent's play, he is always weak to Deadly cards, and if somehow you couldn't manage to destroy him early game, Rocket Science and Cut Down to Size can do so.
Gallery
Plants vs. Zombies Wiki has a gallery for Doubled Mint.
His card features Doubled Mint in his final stage.
However, Doubled Mint is shown in his first stage when his stats shown.
Every time Doubled Mint activates his ability, he will grow leaves in an order.
He can double his stats all the way over 2,147,483,647 (232-1-1). If this happens, due to an internal integer overflow, his / (whichever that passed the number) will turn to -2,147,483,648 (-232-1) instantly, and in the case of health, gets destroyed immediately. This can be seen here.
Damage done to Doubled Mint is not doubled at the start of the next turn. For example, if a newly-played Doubled Mint took 1 damage this turn (at the end of turn he would have 1/1), and has his stats doubled to 2/2 next turn, his health can only reach 3 if the player tries to heal him.
The sound effect used when Doubled Mint is played is also used when Iceberg Lettuce blinks.
Astrocado Pit's old description is very similar to Doubled Mint's description, except that the sentences are swapped and the word "just" is removed.
A puff of green smoke appears whenever he attacks.