Whenever a player attacks, if they aren't attacking you, that player chooses an attacking creature
This is all amplified by the flying side of the card and is well worth the life cost
But if your opponent plonks one of these down, you're going to want to kill it off as soon as possible - you just know they'll have some way to give it trample
Yawgmoth, Thran Physician Card draw, removal, and proliferation all wrapped into one
Kruphix, God of Horizons Kruphix, God of Horizons is one of the most interesting gods for EDH
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