leyline cards mtg of Mutation (188) : Toys & Games exile it instead. Magic The Gathering Dominaria United

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Milling this with Dihada and then bringing it back it seems pretty solid as a starting point, and as an Assassin lord, it gives some extra utility

You can also try to surprise the opponent with End the Festivities, but once the opponent knows you have it, its easy to play around with their counters) Incarnation +3 Invasion of Gobakhan +1 Light of Hope -1 Giant Killer -1 Forbidden Friendship -1 Reckless Bushwhacker P: -1 Voldaren Epicure D: -1 Ornithopter Boros Convoke +2 End the Festivities P: +2 Wedding Announcement D: +2 Forge Devil -3 Giant Killer -1 Reckless Bushwhacker (Im not sure about extra play effects to be honest since both options are not the best ones, but I havent found any better plan and Giant Killers are an easy side out anyway)

You can up the value by putting it into a deck that likes sacrifice, such as Thraximundar

Legendary spells are plentiful not only from the latest Lord of the Rings set but also from deep into Magic the Gathering's history, so there are a lot of cards that you can slot into this deck that would make it powerful