Gazing at the unicorn, I felt closer to the majesty of Nyx than I ever had before. Oineus, traveling merchant Illustrated by Emrah Elmasli Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
You don't get too large an effect on a 1/1 for B, so it had a simple death triggertarget creature gets -1/-1 until end of turn
They are powerful, however, and will almost always improve a decks performance
If a card effect specifically says it can damage/banish/return to hand a location, or any card type on the field, or just says do damage, then yes
EligethEligeth does have the Partner keyword which allows for a more versatile deckbuilding experience through another, non-blue partner commander, but MatoyaMatoya is leaps and bounds superior to EligethEligeth when viewed as the single commander for a mono-blue deck