My favorite three decks: Blue-Red 4-drop spells : This is the base archetype for UR, and is supported quite well Grixis Control: As the name suggests, this is basically just all the good Grixis removal and card draw combined, with some lands for good measure
If the target creature dies that turn, Searing Blood will deal 3 damage to whoever controls the creature when it dies, who isn't necessarily the player who controlled it when Searing Blood resolved
9 Yawgmoth's Will Banned in Legacy, Restricted in Vintage, Legal in Commander Blue is probably the worst offender when it comes to overpowered Magic cards, but black also has its fair share
Crash Through is excellent in a deck like this because its a cantrip that also pushes through damage
The two big ones out there are PSA and Beckett, which each have a scale that ranges from 1 to 10 assessing a cards condition
The cards released in the 30th Anniversary Edition are not tournament legal, sporting a unique card back featuring the legendary Black Lotus