Japan: @YuGiOh_MD_INFO
Americas: @YGOMasterDuel
Europe: @YuGiOhCardEU

If the goal is achieved before Febraury the 6th, 300 gems will be distributed. There are no details if this is limited to some accounts (like Japan-only).

At the same time, a follow and retweet campaign has been announced for Japan residents. By following the JP account and retweeting the campaign tweet, you can participate in a raffle of 1000 prizes of a 100-sleeve set themed after Master Duel.

Campaign tweet.
There is no information yet if a similar campaign will be held outside of Japan.