Out of those, I play Dark Depths, Progenitus, Legacy Weapon and Whispers of the Muse. I try to avoid cards that can kill in one hit or otherwise go infinite all by themselves. So Hellkite Overlord, Consumptive Goo, Akroma Angel of Fury, X spells that target players, Walking Archive, Treasure Trove, Djinn Illuminatus, Mirror Sheen, Door to Nothingness, Mischievous Quanar and others are all out. (Some I could probably safely put in but don't for consistency's sake)
Yes, I realize all of the above cards are easily dealt with, but I don't like the idea of "Get rid of this or lose instantly" or "counter this or lose". It's nearly the same concept as the higher level "Save or die" spells in D&D, which I didn't like as well.
What cards you play also directly relates to the power level of your stack. If you're light on Wrath effects and/or Counterspells, Progenitus might be a bad idea for you, so it's really a judgment call. It also matters a lot what house rules you roll with. My suggestion would be to put the card in our stack, test it out and see how it plays, see how often it kills players and gauge other player's reactions to it. If it's killing too often, maybe you're too light on the appropriate removal. If nobody is having fun with the card, I would probably remove it as well. The whole point is to have fun.







