Henrika, Infernal Seer has what I call the nighthawk trio of abilities that border on keyword soup: Flying, deathtouch and lifelink, and if not for Alela, Artful Provocateur, I'd have called this a vampire exclusive
2: You may cast target instant or sorcery card with mana value 3 or less from your graveyard
The only other card to give everything double strike is Avatar of SlaughterAvatar of Slaughter (also in the deck), but goading everything on top of double strike means the game is going to end very soon
But calling your players (of any game) "greedy" isn't a good look, especially when distributors aren't charging retail for their wares to store owners who are marking those items' prices up
And while the card that costs less clause means you cant use cheaper cascade cards to free-cast the big ones, different free-casting effects like Aetherworks Marvel or Creative Technique offer a mana-efficient way to skip to the top of your mana curve so you can let cards like Devastator cascade you all the way down
During the pre-release timeframe, it was an expensive $200 card, or thereabouts