You wont have many Blood decks, but great Blood cards like Falkenrath Celebrants are even better since there are less of them
Getting a whole set of old, out-of-print cards is as easy as Googling Magic proxies, contacting a vendor, and using PayPal to order a full set of the Power Ninethe rarest, most expensive, and powerful cards in the game
To break down connive step by step: Draw a card
There's no restrictions on stats, type, or mana value of the creature being brought back to the battlefield, and the only thing you have to give up to play it is the three generic, one white to play it
Its also almost always needed in playsets, which means this is a big cost reduction for basically any eternal format
Obviously there are loads of goblins that didn't make this list, that's the tough part of picking out a Top 10