Efficiency always matters but that goes double for creatures like these that you want to cast many times throughout a game

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7 Mudflat Village Uncommon - $0.49 It is fairly unusual for an uncommon land to be worth much in Magic, generally speaking, theyre rather unimpressive compared to rare lands in a set, but thats not the case with Mudflat Village
But I still think its a great precon and certainly better than average
I hope you brought your multicolored dice
Some of them have special abilities noted in the card text, and all of them have a power and toughness rating that shows how much damage they can do and how much they can take per turn