magic the gathering return to ravnica booster box MTG Draft (36ct) (RTR) — Twenty Sided Gargantuan Guild Leaders Ravnica Remastered - Collector Booster

Even a colorless deck can abuse this

Placing Cards in the Humidor You can just lay the card at the bottom of the humidor but ensure there are no water droplets visible inside

Regigigas The Regi deck is also unfavored after doing some testing

Like most Magic: The Gathering cards, the value of Fate Unraveler depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Commander 2015)

Other examples of cards that let you Fusion Summon without a Spell Card are Albion the Branded Dragon and D/D Swirl Slime

And no, I didn't put this Concept off because of what it does