It does a lot of the same things that an aggro deck would want from Lightning Bolt
Shadowheart will go into any deck that loves graveyard stuff, giving us the card that well reanimate along with a chance of drawing the spell thatll do it
Despite being difficult to recur thanks to Ultima exiling itself on the stack, this combo is easily powerful enough to see play in Modern, and will likely be experimented with in control decks
Another from the set which was initially released at D23, this ultra-rare cards appearance on this list really demonstrates the enduring popularity of the small set of cards released at that event
Its only real problem is that it's narrow, but in the right world, it might not be
The Commander format is one of the most fun ways to play thanks to the massive deck size that encourages you to experiment with cards from all over MTG's history, by only allowing one of each card