first edition onix pokemon card price Amazon.com: Pokemon - Onix 095/165 - Pokemon 151 Vintage Common - Set/4 Onix

Its important to note that effects that say each player dont target, so even if a player has protection from everything, cards that say each player sacrifices a creature or each player loses 5 life will still work

There are plenty of reasons this card could be losing value

1 Emergent Woodwurm

Rakdos Signet [Vampire deck]: Stable mana

This is why you need something broken to substantially close the door before your opponent can exploit the card disadvantage

Ive taken apart the 2021 Prismari Performance deck and used it to put together an Izzet Spellslinger deck, and I must say, its great - heres hoping these decks are as well put together