Seto Kaiba is one of the most well-known characters of the Yu-Gi-Oh franchise and for good reason
However, as far as milling in today's Standard goes, Mike Flores brought up a very interesting, and in my opinion brilliant point concerning how lobotomizing milling can be to certain decks
cards, the value of Herald of Purple Light depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Structure Deck: Wave of Light)
Altar of Bhaal is quite nice even without the attached Adventure, simply because getting to reanimate a creature from your graveyard during your turn is excellent even outside of Reanimator strategies, assuming youre playing creatures youd want to get back from your graveyard
Continuous Effects are effects that continue to apply even without declaring an activation
The unsheathed for could would grant a major power boost, force all the defending players creatures to block it, but for every 2/1 creatures killed in this manner, the attacking player would lose a land/life point to symbolise losing Breath