With black devotion decks being able to produce epic amounts of mana and still have no problem splashing I could see Deathgrasp increasing a little in popularity but then Drain Life works pretty fine in that slot too without the phaff of a splash
The only Grass Pokmon that really see play right now are Celebi Prime (who will not be attacking), Shaymin EX (causes trouble, but would probably be 1HKOing you anyway due to usually coming out late game, and thankfully has a workable HP), and Virizion NVI who simply stomps you unless you 1HKO it
And its got respectable ATK/DEF
Cone of Cold taps all creatures your opponents control, not just one opponent
However, even without his queen, Nidoking 174/165 is still a valuable card with a market value on TCGPlayer of $11.10 USD
While you'd expect Samurai to serve their lords and emperors, the Asari Uprisers are different