The tri-colored identity might inhibit Bladecoil Serpents use, especially if the discard mode is the most appealing to you, but perhaps Nicol Bolas or Lord Xander, the Collector players might want a way to spread that hand-shredding love to everyone, not just target opponents
You get wait two more turns to see their Commander for the first time, and then sac to draw and replace itself, which is rare card flow in White
Some characters even have special abilities
The every-turn gravedigger and slow bleed are beautiful
While Fateful Absence allows your opponent to create a clue token, this shouldnt be too much of an issue unless they have pre-built synergy in their deck
It can make the card surprisingly costly to attack for such a cheap character, but if he remains undealt with you could find yourself quickly seeing your lore pile up