We're playing a couple Illusions in the deck, like Phantom Steed, but the majority of Illusions are going to made by triggering Minn through card draw: Merfolk Looter and All-Seeing Arbiter can guarantee triggering Minn on our own turn, while cards like Arcanis the Omnipotent can trigger her on any turn
You must still follow any timing restrictions and permissions for the permanent spell you cast from exile
If you do, destroy target artifact or creature
Where There's a Mill Milling is Magic slang for putting cards from the top of a player's library directly into that player's graveyard
Now I can repeatedly drop multiple Elves into play alongside a Shaman with Kayla, replacing my hand each time
Most casual players are willing to trade a couple of exiled cards from their library to add another land to their fat stack, and you net cards quite often