Your scheme deck must have at least 10 cards, as per the new Duskmourn Archenemy rules, but youre free to play more than 10 schemes in your scheme deck
With four different keywords to make the card extremely hard to deal with, Atraxa, Grand Unifier cements its place in the expansion quite well, which is why it's the highest-valued card under 100 dollars
If Riddleform becomes a creature the same turn it enters the battlefield, you can't attack with it unless it gains haste
On top of that, during your turn, Tashigi can rest 2 cards to gain a +2,000 Power boost that sticks during your opponents turn, becoming an 8,000 Power threat
Gisa and Geralf Innistrad block delivered most of the things that the audience wanted but not everything (more on this when I get to Ulrich of the Krallenhorde next week)
Zacama, Primal Calamity is another expensive Dinosaur with 9/9 stats and great abilities