Im not going to try to create a single, unified meaning, but offer up some language and structure so that we can better understand one another (or perhaps misunderstand less)
If this card is discarded to the Graveyard by a card effect: If it was discarded from your hand to your Graveyard by an opponent's card effect, you can target 1 monster in your opponent's Graveyard
Of course, it doesnt prevent any damage to itself, which is a bummer, but the ability to slap this card down and then play a Star of Extinction with a full board putting 20 +1/+1 counters on all of your creatures (except for Vigor) is a play that will likely cause your foe to concede on the spot
Various cards can add further power to the deck, such as the Goblin Anarchomancer, which makes green and red spells cheaper by one colourless mana, the Mage Slayer, which promises unblockable damage, or the Rhythm of the Wild enchantment, which protects your own creature spells from counterspells
Just a month ago, this card was trading for around 56, but it has since surged to approximately 2025
4) Leafeon ex (144/131) This Leafeon ex has one of the most unique Special Illustration Rare designs in the set, and its been met with a positive response from the community online