Great news! Wizards is running a contest for Magic core 2021 – here is a breakdown of the promotion: Link
This is a fun promotion allowing players to vote for cats or dogs and then getting a code to redeem on Magic Arena for cat or dog themed sleeves each week. Keep in mind each account can only get one set of sleeves or the other.
Week 1 June 26–July 2: Players who voted in our prerelease will get sleeves
Week 2 July 3–9: Players who vote in our discord channel will get sleeves
Week 3 July 10–16: Players who comment on our Facebook post will get sleeves.