情報來源： 官方推特
https://twitter.com/mtg_arena/status/1281343020315508737?s=21
On August 1st we're holding the next Arena Open, and the format is..... Histor
ic! Bring your best Historic deck and compete for some sweet rewards (like $2,
000).
跪求不要再跟地牌綁一起，不然我又要參加了QQ