Cast Undying Flames.
Undying Flames is exiled with Eye of the Storm.
Choose to not cast your copy of Undying Flames with Eye of the Storm.
Hive Mind triggers, and all other players are forced to cast Undying Flames.
All other players may not cast any other spells for the rest of the game because of Undying Flames's Epic ability, and they can not harm you with Undying Flames due to Leyline of Sanctity.

Opponents can't cast spells

Lock

Eye of the Storm

Hive Mind

Undying Flames

Leyline of Sanctity

Cast Fractured Identity by paying {3}{W}{U}, exiling Leyline of Sanctity and causing each opponent to create a token copy of it.
Cast Sky Swallower by paying {3}{U}{U}.
When Sky Swallower enters, it triggers, but you cannot target an opponent as they all have hexproof.
Cast Fractured Identity from your graveyard for its flashback cost by paying {3}{W}{U}, exiling Sky Swallower and causing each opponent to create a token copy of it.
When each opponent's Sky Swallower enters, they each trigger. Each opponent is forced to target you, as all other players have hexproof, giving you control of all their other permanents.

Combos with "Leyline of Sanctity"