I run Draining Whelk in a bunch of my Commander decks for y'all, as one example, as well as Mystic Snake, Voracious Greatshark, and Overcharged Amalgam
Staff of Compleation is tuned more for a lifegain-based deck, and works really well under those conditions
While this card is face-up on the field, you can Normal Summon it to have it be treated as an Effect Monster with this effect: Once per turn, you can select 1 face-up Level 4 or lower DARK monster you control
Card 1 126+1 card types *This product also includes alternative art and parallel design cards from the above types
Otherwise, Skill Drain can work really well in decks like Dark World that activate most of their effects from the graveyard
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