He denies them both
Since you need to check for color identity and not just a cards color, cards that are blue or black and have other mana symbols in their effects cant be played in a Yuriko deck
Standard Ranked puts you on the competitive ladder, using only the cards available in the Standard format at the moment, but if you have more cards from previous sets, choose Historic Ranked to have the freedom to use all the cards you want
Wick, the Whorled Mind Wick, the Whorled Mind is a weird one in that you have to sacrifice snails and the cost is strangely and makes this a Grixis commander
A few innovations from this set off the top of my head: moving Draft as a format forward into a multi-set structure, bringing old school subjects (Djinns, the ill-fated enchant world types) into cohesive set design
Reanimate Reanimate is a one-cost (one black) sorcery spell