It shuts down combos, which makes it one of the best keywords in the whole game
Korean and Chinese cards, while growing in popularity, tend to be less valuable compared to their Japanese and English counterparts, partly due to print run sizes and market demand
There is not enough information to give exact estimates for the holo pull rates
It will even save you a few precious life points in the first two turns against very aggressive decks like Zoo or Burn, and later in the game has the ability to recycle your used threats and removal that youve already used once
Most of the time, that lifegain is totally worth it if youre removing the biggest threat on the table
If a creature on the battlefield has a "whenever another creature enters" ability, it won't trigger because that creature will be face down before Ixidron enters