Emrakul, the Aeons Torn is the obvious answer, but you can probably look at Sundering Titan, Progenitus, or a host of other finishers depending on the matchup
While it does have a color restriction, its still a great budget replacement for Swiftfoot Boots or Lightning Greaves
Illustrated by Richard Wright Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
Best Value Picks Its difficult to measure value, as it depends on whether youre talking about financial gain, the experience youll get from the deck, or the usefulness of the game pieces youre getting
He can grant double strike immediately, and once he starts attacking he has very real potential to add permanents to the board