Play it in decks that want to draw a bunch of cards, wizards, or combos
A spell cast using harmonize will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way
You must sacrifice exactly one creature or enchantment to cast Final Flare
For slower decks, it can offer some early-game protection against more aggressive decks, giving you a turn to gather your resources, or cast a spell that doesnt have a direct impact on the board
But much like Kaalia of the Vast and Zur the Enchanter, Narset has a powerful attack trigger, rather than a combat damage based one
Tide Shaper looks to change that, acting as a Spreading Seas with a body much the same as Freebooter and Mage are pseudo- Thoughtseize s on a body