If we look at more blingy versions of Preordain, we can see a bunch of more dramatic price changes
Image size 1050x1500px 4.51 MB 2016 - 2026 LordNyriox
(2022-12-08) "Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." (2021-03-19) You must still follow any timing restrictions and permissions, including those based on the card's type
You can do it efficiently, but youll have to give something up
In these Magic: The Gathering March of the Machine Commander Decks, each deck comes with their own ten-card Planechase deck, with cards that, generally speaking, benefit that respective deck's strategy
Equip Artifact - Equipment Artifacts (CTRL to add secondary) Creatures Bloodbraid Elf Haste (This creature can attack and as soon as it comes under your control.) Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less