Taking it slowly, here's what happens when Morphic Tide's ability resolves: 1) Each player counts the number of permanents they own. 2) Each player shuffles those permanents into their library. 3) Each player reveals cards from the top of their library equal to the number that player counted. 4) Each player puts all artifact, creature, land, and planeswalker cards revealed this way onto the battlefield. All of these cards enter at the same time. 5) Each player puts all enchantment cards revealed this way onto the battlefield. An Aura put onto the battlefield this way can enchant an artifact, creature, land, or planeswalker that was already put onto the battlefield, but can't enchant an enchantment that's being put onto the battlefield at the same time as it. If multiple players have Auras to put onto the battlefield, the player whose turn it is announces what their Auras will enchant, then each other player in turn order does the same, then all enchantments (both Auras and non-Auras) enter at the same time. 6) Each player puts all of their other revealed cards (instants, sorceries, and Auras that can't enchant anything) on the bottom of their library in any order.