You can transfer Pokemon from Black/White, Black 2/White 2, and X/Y if you buy a Pokemon Bank subscription for $4.99 a year
If you are looking for the TL;DR, its rather simple
Nintendo has a lot planned to celebrate the 25th Aniversary of its critter-combat franchise
Collector's Rare A Collector's Rare is mainly found in the OCG version of YuGiOh, but it was introduced to the TCG by the Toon Chaos booster pack
Once the app recognizes it (works on non-English cards), you can tap the three dots and select Download image to get a clear English-version image
The Ur-Dragon is currently in the fifth spot of all-time commanders, but I expect that to change with the reprint (theres only a couple hundred decks between it and number four, barely a thousand between it and number three)