It can be cut off at the knees with early Commander removal, but if you can get into a position where youve got some colossal hydras bearing down on an opponent or two, youll be glad you did your math homework
check out these mono-Green dorks from the same set
But Final Fantasy is not a premium set, or at least, it shouldn't be
She hopes that, by fostering in others the sense of wonder and respect that she feels for nature, she can preserve the beautiful diversity of life in the Multiverse and honor the memory of her own lost world
There's no upkeep cost and no way around it with the exception of removing Moat itself
You may not get that much value back for each sacrifice individually, but thats a lot more than the zero value most decks are getting in these scenarios