Magus of the Vineyard

This is a fantastic mana-accelarting card for most fast green decks, but it has some drawbacks. Unless you pull one of these in an early turn, they really don't do you that much good. I test played with these and ended up taking mana burn more often than they were helpful. Also, that GG goes to your opponent too, who can use that mana for colorless even if they're not playing green. I'd strongly advise testing how this card would work in your deck, by using proxies, before buying.