Honchkrow Lv X is a really great addition for any deck with Honchkrow in it. He adds versatility by giving your Murkrows (who have free use of Honchkrow attacks thanks to Dark Genes) by giving them a sniping attack for 40 (Feint Attack) and Darkness Wing, which deals 60 AND if you KO with it, you get a free card from your Discard pile. Honchkrow Lv X has 110 HP (20 HP improvement over Honchkrow), and unlike some of the other Lv Xs, does not have a 2x Weakness. Free Retreat also means Honchkrow Lv X can make a quick getaway if necessary.
Modified - 8/10 (Limited to Honchkrow-using decks, which should increase in number soon)
Limited - 0/10 (There is no Honchkrow in SW, so make sure you tuck this away for later)
Unlimited - 1/10 (SER and ER eat up Honchkrow Lv X, leaving your Murkrow not well-off)