If a player is instructed to set multiple schemes in motion, that player sets a scheme in motion that many times
Murktide is also a graveyard-dependant threat this means that Relics of Progenitus, Rest in Peace and other graveyard hate, that are typically decent against blue-based decks, can stop this dragon from being a good threat or to be castable at all
Getting some extra shots at Sun Titan is always welcome, and the Flashback means if you are forced to discard (likely by taking advantage of looting effects like Smugglers Copter, or Mask of Memory) you stand to lose less
The life loss isnt much of a downside, but it can be painful if you need to remove a Doubling Season or Warstorm Surge
Queen Kayla bin-Kroog Discard cards for value Queen Kayla bin-Kroog is a fascinating card in The Brothers War
Thousands of decks were sold those first few years, with cards like Black Lotus becoming so infamous even non-players knew of their mythical powers