For the treasure cards, Soulreaper's Scythe is written as Soothe, and this applies to all the guides.
Also I feel that the author may not have tried the 'Overpowered' treasure card before, and the text on it may be misleading, it copies all other cards you play during the turn after playing it, not just one card. At the very least if played right you get another copy of one or two minions on the board in the same turn, and is even better with cost reducing passive treasures like Emerald goggles and Scepter of Summoning.
