Since it's not a planeswalker or legend, the questions we need to answer is, "Do we consider Obsidian Fireheart to be epic?" The idea that you can light lands on fire and use them to burn an opponent is sort of epic, but it's a lot like a Curse of the Pierced Heart that costs seven-mana
If the format features multiple decks where that ability would be useful, I would definitely be interested in giving this card a shot
9 Brokkos, Apex Of Forever Brokkos, Apex Of Forever is a commander that can cheat around the commander tax
From a reprint value perspective, Preordain is worth roughly 40 cents in its cheapest, non-foil form according to TCGplayer market price
The premise is this: you are a powerful wizard, called a planeswalker, who summons creatures, spells, and weapons to aid you in your destruction of other planeswalkers
Already you may want to go with cards with expensive equip costs like Colossus Hammer