Having a tutor on a stick is one thing, but then having that tutor also put stuff into play immediately really makes Zur obnoxious
The attacking creature with Double Strike will deal damage first as if it had First Strike, then both creatures will damage each other like combat would normally go
With their ability to search supporters on command with Buddy Catch Gallade and access to Marshadow, your hand is never safe against Psychic
Without the once-a-turn limit, you could really go off, but as it is, I cant think of much thats exciting
Doomsday Confluence X-cost spells, while potent in the late-game, can often be underwhelming inclusions at any other point of play
Id say they can be replaced with more fitting cards