It sort of gives you a little short burst, instead of a half an hour long game, which can be a positive in some scenarios
Thousand-Year Elixir, Kiora, Behemoth Beckoner, and Patriar's Seal all let you do just that and should be used almost exclusively on Helga
(Gold, artifact, and colorless aren't colors.) If Conqueror's Flail is attached to a creature you control and you activate its equip ability targeting another creature you control, there's no time in between activating that ability and the resolution of that ability during which it's not attached to a creature
But outside of combo which is a bit harder in casual EDH, Yawgmoth can draw a lot of cards
You cannot choose to pay the mana cost or any alternate costs for the card if you choose to cast it, and if it has in its mana cost, you must choose 0 as the value of
Wish Wish is an absolutely ridiculous Rare Red Sorcery that costs only three mana to play, including one Red