The legendary cards reflect the characters, places, and creatures that are core to the story
We take a look at a very old school sort of guy, Boris Devilboon, from the original Legends set, and then build a $33.58 deck around our good demonic friends
The price you pay for the resulting effects would be very expensive if attached to an instant or sorcery spell, but seeing that they are attached to a creature and can be activated repeatedly and at instant speed, the additional price seems a bit fairer
Each of these cards is an absolute powerhouse card
So the first thing we have is demand driven by a card's functional value , tied to its relevance in the meta and its versatility in fitting into multiple decks or formats
There are a number of directions you can take this brainy Bird, and none of them are clearly superior to the others