yugioh dark contract cards Yu-Gi-Oh! - with The Entities - RATE-EN099 - Ultra Rare may be 1st or Unlimited Edition Dark Contact | Yu-Gi-Oh! Wiki

A free, desktop tool called Arena Tutor tracks your Arena collection, let you know if you've got 100% of a set, and gives you a nice perspective on what you're missing

Renren 7,018 decks 31,660,494 views milliezone 7,107 decks 13,210,700 views YGOPRODeck Bot 2,263 decks 11,824,015 views #ma# 1,753 decks 9,262,742 views IUgioh team 6,144 decks 8,148,170 views MLCuong TS 1,132 decks 7,519,437 views Master Duel Decks 222,534 decks 6,265,185 views gogata05 1,337 decks 5,988,269 views Nexix 2,408 decks 5,657,235 views Treven 521 decks 3,686,427 views Fleety91 575 decks 2,799,819 views coolqueval 379 decks 2,446,542 views YGOPRODeck Stats Snapshot of the site database and published content

A basic web bot polling the API may be able to find it

Some are easier to achieve than others, but they all require some level of precise deckbuilding to work

There are 3,300 (3 A) copies of each Beta rare