1 of 1 pokemon card Pokémon TCG: First Partner Illustration Collection—Series Series 1 Rare Pokémon card, one of

Underground Sea taps for either Blue or Black mana with no downside whatsoever

I know @supersaiyanampharos collects them, and has already been able to find quite a few of them over the years

Card not found I like this card enough to have written a whole article about him/her/it

You won't see this creature type printed on creatures in this set, but keep in mind that creatures with the changeling ability are Goats

So while some decks might struggle to produce a big payoff from an X spell, green strategies are often well suited to produce lots of mana in a short amount of time, allowing cards like Invasion of Ikoria to suddenly apply pressure with whatever creature is going to be the best solution to a given situation