Is Madness a Triggered Ability or an Activated Ability
Out of the quartet of reprints, Pyrohemia is easily the most expensive, typically selling for around $11
Now imagine how much carnage would occur if you cast an Arcbond or Blasphemous Act in such a situation Its not a totally new idea to combine redirection and damage doubling in this way, but having such a key effect in the command zone is a very sweet bonus
There have been so many busted combo decks making use of Lotus Petal and Lions Eye Diamond, but my favorite will always be what I believe to be the most broken deck in Magic history (at least since the advent of the four-of rule and restricted list), a turn 1 kill deck detailed here , making use of the temporary abusability of Lions Eye Diamond when you could use it to play a spell from your hand before discarding your hand
The easiest way to do this is to start with your win condition and work backwards
Its a big threat thats hard to block and it deals a ton of damage when it dies