Like most Pokmon cards, the value of Eelektross depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Lost Origin)
The color palette leans heavily into stark contrasts, with bright whites clashing against deep shadows
I think your deck is built to easily go with the black splash suggestios and the creature variant would be a different deck entirely
If at least one target is still legal, it will resolve and do as much as it can
If Bruse Tarl leaves the battlefield after other Oxen you control have dealt first-strike damage but before regular combat damage, those Oxen won't deal regular combat damage (unless they still have double strike for some other reason)
Perhaps the most important is..what the card means to the person it belongs to