Sachi, Daughter of Seshiro is weird as a 4-mana 1/3, but if you have a bunch of shamans around, youll generate a lot of mana
If your opponent sees it, pray the conditions arent met yet
It sets up any of black's non-sacrifice synergies efficiently, and it's a flying 6/6 for some reason, so it poses a decent clock
If your list has no clear win condition, weak payoffs, or too many cards that dont support your strategy, the deck struggles no matter how much money you spend on it
Giovanni's Nidoking (Holo, Gym Challenge) is one of the more imposing and visually dramatic cards in either set
They have the very rare Meld mechanic, where you can pay five mana to fuse them together if theyre both on the battlefield