This deck wants to loot all its nasty artifacts like Wurmcoil Engine and Myr Battlesphere into the graveyard and return them to the battlefield with cards like Goblin Welder
Typically these are used in concert with discard effects in decks with heavy graveyard synergy as you will want specific things in the bin and wont be able to control whether you draw them or not
This is primarily useful in black decks that focus on sacrificing their creatures, but it can still get some mileage from black decks that use other tactics
Sorcery Color tag templates(None) Sorcery (CTRL to add secondary) Tutor Qty: 6 Price: 52.87 Gamble Search your library for a card, put that card into your hand, discard a card at random, then shuffle
Blue Otters, Frogs, Birds, and Rats are based in blue mana, and bring with them all manner of spellslinging and flying strategies