Since its unbanning, new strong equipments (Kaldra Compleat, The Reality Chip, Colossus Hammer) have been printed and have found a home in a very solid Tier 1 deck (Hammer Time) alongside Stoneforge Mystic, without being too powerful for Modern
Dont worry about decking yourself (drawing until you lose), though
You never know when you'll get a so-called apology code for unplanned system downtime
There may be others out there, but these are the big ones: classified ads (of which Craiglist is likely the most popular), Ebay, and your Magic social circle (this includes Facebook groups, friends, local gaming stores, and players in your local area)
Its particularly effective with spells like Disrupt Decorum, forcing opponents to attack specific players and wreak havoc on the board
As long as you control it, your werewolves maintain their more powerful transformed state