Incubation Druid

Mana cost: {1}{G}
Type: Creature — Elf Druid
Power / toughness: 0 / 2
Set: New Capenna Commander #296 (rare)
Price: $2.71 USD

{T}: Add one mana of any type that a land you control could produce. If this creature has a +1/+1 counter on it, add three mana of that type instead.
{3}{G}{G}: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)

Incubation Druid has 7 printings, first in Ravnica Allegiance (2019). EDHREC ranks it #642 among Commander cards. It appears most in Tidus, Yuna's Guardian decks (18,025 on EDHREC). 4 public decks on TCG run it. It has 6 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: legal
standard: not legal
brawl: legal

Public decks that run Incubation Druid

Bedecked Brokers - New Capenna Commander, led by Perrie, the Pulverizer
Call for Backup - March of the Machine Commander, led by Bright-Palm, Soul Awakener
Counter Blitz - Final Fantasy Commander, led by Tidus, Yuna's Guardian
Quantum Quandrix - Commander 2021, led by Adrix and Nev, Twincasters

Commanders that run Incubation Druid most

Deck counts from EDHREC.

Tidus, Yuna's Guardian: 18,025 decks
Voja, Jaws of the Conclave: 10,569 decks
Ms. Bumbleflower: 9,885 decks
Yuna, Grand Summoner: 7,588 decks
Rocco, Street Chef: 6,314 decks
Galadriel, Light of Valinor: 5,999 decks
Magus Lucea Kane: 5,819 decks
The Wise Mothman: 5,774 decks

Often played with Incubation Druid

Cards that show up in the same decks on EDHREC.

Rulings

2019-01-25: Incubation Druid checks the effects of all mana-producing abilities of lands you control, but it doesn't check their costs or legality. For example, Spire of Industry says "{T}, Pay 1 life: Add one mana of any color. Activate only if you control an artifact." If you control Spire of Industry and Incubation Druid, you can tap Incubation Druid for any color of mana. It doesn't matter whether you control an artifact, whether you can pay 1 life, or whether Spire of Industry is untapped.
2019-01-25: Incubation Druid doesn't care about any restrictions or riders your lands put on the mana they produce, such as those of Unclaimed Territory and Guildmages' Forum. It just produces one mana of the appropriate type, with no restrictions or riders.
2019-01-25: You can always activate an ability that will cause a creature to adapt. As that ability resolves, if the creature has a +1/+1 counter on it for any reason, you simply won't put any +1/+1 counters on it.
2019-01-25: If a creature somehow loses all of its +1/+1 counters, it can adapt again and get more +1/+1 counters.
2019-01-25: The types of mana are white, blue, black, red, green, and colorless.
2019-01-25: Any change to a land's type or abilities gained by a land can affect the types of mana a land can produce.