Standard: Only cards from the latest block can be played (typically, cards from the last 2 years)
We dont have Lightning Helix
This "enters or attacks" trigger is insane, because provided you have at least one nonland permanent in your graveyard, Sin is always going to bring it back, and by the time you play him in these colors it's virtually impossible that you don't have stuff to get back
There are three basic rarities for cards in the Pokemon TCG and each type of rarity is denoted by a symbol found in the bottom left of every card, each of which well detail and show highlighted for you for each type of card rarity
Green on average is larger than black but black definitely has access to larger creatures, especially at higher rarities
Hes one of the best cards in our deck, but because he is Legendary, only one of him can be on the battlefield at a single time and he doesnt leave the battlefield that often